/* ============================================
   UmarMasood.com - Centralized Theme Stylesheet
   ============================================ */

/* CSS Variables for Easy Theme Management */
:root {
    /* =============================================
       Deep Circuit Palette
       ============================================= */
    --bg-0: #070A0F;
    --bg-1: #0B1118;
    --surface-0: #111B25;
    --surface-1: #172634;
    --surface-2: #1D3140;
    --border: #294052;
    --text: #F2F7FA;
    --muted: #B6C4D1;
    --accent: #2DD4BF;
    --accent-2: #38E2B8;
    --link: #68A9FF;
    --warm-accent: #F3B454;

    /* Legacy aliases — mapped to new palette for backward-compat */
    --primary-color: var(--surface-0);
    --primary-hover: var(--surface-1);
    --primary-light: #203746;
    --primary-dark: var(--bg-1);

    /* Teal Accent Colors */
    --teal-color: var(--accent-2);
    --teal-hover: var(--accent);
    --teal-light: #7DEFD0;
    --teal-dark: var(--accent);

    /* Aqua Accent */
    --aqua-color: var(--link);
    --aqua-hover: #4E8EEE;
    --aqua-light: #9AC3FF;

    /* Gradient Colors */
    --gradient-start: var(--bg-1);
    --gradient-mid: var(--surface-0);
    --gradient-end: var(--surface-1);

    /* Text Colors */
    --text-primary: var(--text);
    --text-secondary: var(--muted);
    --text-muted: #c5d2e0;
    --text-light: #ffffff;
    --text-dark: #1f2937;

    /* Background Colors */
    --bg-primary: var(--bg-1);
    --bg-secondary: var(--surface-0);
    --bg-tertiary: var(--surface-1);
    --bg-dark: var(--bg-0);
    --bg-light: var(--surface-1);
    --bg-card: var(--surface-0);

    /* Border Colors */
    --border-color: var(--border);
    --border-light: #3B566A;

    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 4rem;
    --spacing-xxxl: 6rem;
    
    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-family-heading: 'Inter', "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-base: 1rem;
    --font-size-sm: 0.875rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --line-height-base: 1.7;
    
    /* Border Radius */
    --border-radius-sm: 0.375rem;
    --border-radius: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1.5rem;
    --border-radius-full: 9999px;
    --radius: 16px;
    --radius-sm: 12px;

    /* Shadows */
    --shadow-sm: 0 10px 24px rgba(0,0,0,.28);
    --shadow: 0 14px 40px rgba(0,0,0,.38);
    --shadow-md: 0 16px 32px rgba(0,0,0,.4);
    --shadow-lg: 0 24px 48px rgba(0,0,0,.5);
    --shadow-xl: 0 32px 64px rgba(0,0,0,.55);
    
    /* Transitions */
    --transition-fast: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Container Max Width */
    --container-max-width: 1280px;
    
    /* BRCL Admin Theme Colors */
    --brcl-red: #b91c1c;
    --brcl-red-hover: #991b1b;
    --brcl-red-light: #dc2626;
    --brcl-red-dark: #7f1d1d;
    --brcl-red-bg: #fef2f2;
    --brcl-blue: #3b82f6;
    --brcl-green: #10b981;
    --brcl-yellow: #f59e0b;
    --brcl-gray: #6b7280;
}

/* ============================================
   Global Styles
   ============================================ */

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text);
    background:
        radial-gradient(ellipse 75% 42% at 50% -8%, rgba(45,212,191,.12) 0%, transparent 68%),
        radial-gradient(ellipse 55% 42% at 88% 12%, rgba(104,169,255,.07) 0%, transparent 62%),
        linear-gradient(rgba(7,10,15,.96), rgba(7,10,15,.985)),
        url('/images/bg-circuit.png') center top / cover fixed no-repeat,
        linear-gradient(180deg, var(--bg-1) 0%, var(--bg-0) 100%);
    background-attachment: fixed;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    padding-top: 80px; /* Offset for fixed navbar */
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.025em;
}

a {
    color: var(--link);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-2);
    text-decoration: none;
}

a:focus-visible {
    outline: 2px solid rgba(34,197,94,.6);
    outline-offset: 3px;
    border-radius: 4px;
}

/* ============================================
   Navigation
   ============================================ */

.navbar {
    background-color: rgba(10, 16, 23, 0.92) !important;
    border-bottom: 1px solid var(--border) !important;
    padding: var(--spacing-lg) 0;
    box-shadow: 0 4px 24px rgba(0,0,0,.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.navbar-brand {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--accent-2) !important;
    transition: color var(--transition-fast);
    letter-spacing: -0.02em;
}

.navbar-brand:hover {
    color: var(--accent) !important;
}

.navbar-logo {
    height: 45px;
    width: auto;
    transition: opacity var(--transition-fast);
}

.navbar-logo:hover {
    opacity: 0.8;
}

.nav-link {
    color: var(--text-primary) !important;
    font-weight: 600;
    padding: var(--spacing-sm) var(--spacing-md) !important;
    margin: 0 var(--spacing-xs);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--accent-2);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-2) !important;
    background-color: transparent;
}

.nav-link:focus-visible {
    outline: 2px solid rgba(34,197,94,.6);
    outline-offset: 2px;
    border-radius: var(--border-radius);
}

.nav-link:hover::after {
    width: 80%;
}

/* ============================================
   Cards
   ============================================ */

.card {
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
    background-color: rgba(17, 27, 37, 0.92);
    background-image:
        linear-gradient(180deg, rgba(255,255,255,.055) 0%, rgba(255,255,255,.015) 64%);
    box-shadow: 0 14px 34px rgba(0,0,0,.36);
    border: 1px solid var(--border);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 44px rgba(0,0,0,.42), 0 0 0 1px rgba(45,212,191,.14);
    border-color: rgba(45,212,191,.62);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
    background-color: var(--bg-tertiary);
}

.card-body {
    padding: var(--spacing-lg);
}

.card-title {
    color: var(--text);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.card-text {
    color: var(--muted);
    margin-bottom: var(--spacing-md);
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    border-radius: var(--border-radius-full);
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    border: none;
    font-size: var(--font-size-sm);
    letter-spacing: 0.025em;
}

.btn-primary {
    background-color: var(--accent);
    color: #05110F;
    box-shadow: 0 4px 18px rgba(45,212,191,.32);
    border: none;
}

.btn-primary:hover,
.btn-primary:focus-visible {
    background-color: var(--accent-2);
    color: #05110F;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(45,212,191,.44);
}

.btn-outline-primary {
    background-color: transparent;
    color: var(--accent);
    border: 2px solid var(--border);
}

.btn-outline-primary:hover {
    background-color: rgba(255,255,255,.04);
    color: var(--accent-2);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background-color: rgba(255,255,255,.04);
    border-color: var(--border-light);
    color: var(--text);
}

.btn:focus-visible {
    outline: 2px solid rgba(34,197,94,.6);
    outline-offset: 2px;
}

/* ============================================
   Page Sections
   ============================================ */

.page-header {
    background:
        linear-gradient(180deg, rgba(7,10,15,.9) 0%, rgba(7,10,15,.97) 100%),
        radial-gradient(ellipse 65% 54% at 50% 0%, rgba(45,212,191,.1) 0%, transparent 64%),
        radial-gradient(ellipse 44% 45% at 82% 15%, rgba(104,169,255,.07) 0%, transparent 66%),
        url('/images/bg-circuit.png') center 42% / cover no-repeat,
        linear-gradient(135deg, var(--bg-1) 0%, var(--surface-0) 100%);
    color: var(--text);
    padding: var(--spacing-xxl) 0;
    margin-bottom: var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--border);
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent 0%, rgba(255,255,255,.07) 45%, transparent 100%);
    opacity: 0.24;
    mix-blend-mode: screen;
}

.page-header h1 {
    color: var(--text-light);
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.page-header .lead {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

/* ============================================
   Footer
   ============================================ */

.footer {
    background-color: var(--bg-dark);
    color: var(--text-light);
    border-top: none;
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
}

/* ============================================
   BRCL Admin Panel Styles
   ============================================ */

.brcl-admin-header {
    background-color: var(--brcl-red) !important;
    color: white !important;
    padding: 1rem 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.brcl-admin-header .navbar-brand {
    color: white !important;
    font-size: 1.5rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brcl-admin-header .navbar-brand i {
    font-size: 1.75rem;
}

.brcl-admin-header .navbar-brand:hover {
    color: rgba(255, 255, 255, 0.8) !important;
}

.brcl-admin-nav {
    background-color: #dc2626 !important;
    border-bottom: 1px solid #b91c1c;
    padding: 0;
}

.brcl-admin-nav .nav-tabs {
    border-bottom: none;
    margin-bottom: 0;
}

.brcl-admin-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    border: none;
    border-radius: 0;
    padding: 0.875rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    background-color: transparent;
}

.brcl-admin-nav .nav-link:hover {
    color: white !important;
    background-color: rgba(255, 255, 255, 0.1);
}

.brcl-admin-nav .nav-link.active {
    color: white !important;
    background-color: var(--brcl-red-dark) !important;
    border-bottom: 3px solid white;
}

.brcl-admin-main {
    background-color: #f8fafc;
    min-height: calc(100vh - 140px);
    padding: 0;
}

.brcl-dashboard-title {
    background: linear-gradient(135deg, var(--brcl-red) 0%, var(--brcl-red-light) 100%);
    color: white;
    padding: 2rem 0;
    margin-bottom: 0;
    text-align: left;
}

.brcl-dashboard-title h1 {
    color: white;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brcl-dashboard-title i {
    font-size: 2.5rem;
}

.brcl-management-card {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.brcl-management-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.brcl-management-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.brcl-management-card h5 {
    color: #1f2937;
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
}

.brcl-management-card p {
    color: #6b7280;
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.brcl-btn-red {
    background-color: var(--brcl-red) !important;
    color: white !important;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.brcl-btn-red:hover {
    background-color: var(--brcl-red-hover) !important;
    color: white !important;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(185, 28, 28, 0.3);
}

.brcl-btn-outline-red {
    background-color: transparent !important;
    color: var(--brcl-red) !important;
    border: 2px solid var(--brcl-red) !important;
    padding: 0.75rem 1.5rem;
    border-radius: 0.375rem;
    font-weight: 600;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.brcl-btn-outline-red:hover {
    background-color: var(--brcl-red) !important;
    color: white !important;
    border-color: var(--brcl-red) !important;
}

.brcl-quick-actions {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.brcl-quick-actions .card-header {
    background: #f8fafc;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 1.5rem;
}

.brcl-quick-actions .card-header h6 {
    color: #1f2937;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brcl-quick-actions .card-body {
    padding: 1.5rem;
}

.brcl-quick-actions .btn {
    margin-bottom: 0.75rem;
    width: 100%;
    justify-content: center;
}

.brcl-quick-actions .btn:last-child {
    margin-bottom: 0;
}

.brcl-quick-links {
    background: white;
    border: 1px solid #e5e7eb;
    border-radius: 0.5rem;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.brcl-quick-links .card-header {
    background: #f8fafc;
    border-bottom: 1px solid #e5e7eb;
    padding: 1rem 1.5rem;
}

.brcl-quick-links .card-header h6 {
    color: #1f2937;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.brcl-quick-links .card-body {
    padding: 1.5rem;
}

.brcl-quick-links .btn {
    margin-bottom: 0.75rem;
    width: 100%;
    justify-content: center;
}

.brcl-quick-links .btn:last-child {
    margin-bottom: 0;
}

/* Icon Colors for Management Cards */
.brcl-management-card .text-blue {
    color: var(--brcl-blue) !important;
}

.brcl-management-card .text-green {
    color: var(--brcl-green) !important;
}

.brcl-management-card .text-yellow {
    color: var(--brcl-yellow) !important;
}

.brcl-management-card .text-gray {
    color: var(--brcl-gray) !important;
}

.brcl-management-card .text-red {
    color: var(--brcl-red) !important;
}

/* Admin Body Override */
body.admin-body {
    padding-top: 0 !important;
    background-color: #f8fafc;
}

/* Responsive Design */
@media (max-width: 768px) {
    .brcl-dashboard-title {
        padding: 1.5rem 0;
    }
    
    .brcl-dashboard-title h1 {
        font-size: 1.5rem;
    }
    
    .brcl-dashboard-title i {
        font-size: 2rem;
    }
    
    .brcl-management-card {
        padding: 1.5rem;
        margin-bottom: 1rem;
    }
    
    .brcl-management-card i {
        font-size: 2.5rem;
    }
    
    .brcl-admin-nav .nav-link {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}

/* ============================================
   Utility Classes
   ============================================ */

.container-custom {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.text-muted-custom {
    color: var(--text-muted) !important;
}

.bg-light-custom {
    background-color: var(--bg-light) !important;
}

/* Override Bootstrap bg-light and bg-white to match dark theme */
.bg-light {
    background-color: var(--surface-0) !important;
    color: var(--text) !important;
}

.bg-white {
    background-color: var(--surface-1) !important;
    color: var(--text) !important;
}

/* Fix badge text contrast when using bg-light override */
.badge.bg-light {
    background-color: var(--surface-1) !important;
    color: var(--muted) !important;
    border: 1px solid var(--border);
}

/* Inputs, selects, textareas */
.form-control,
.form-select,
input[type="text"],
input[type="search"],
input[type="email"],
textarea,
select {
    background-color: var(--surface-1) !important;
    border: 1px solid var(--border) !important;
    color: var(--text) !important;
    border-radius: var(--radius-sm);
}

.form-control::placeholder,
input::placeholder {
    color: var(--muted) !important;
    opacity: 0.75;
}

.form-control:focus,
.form-select:focus,
input:focus,
textarea:focus,
select:focus {
    background-color: var(--surface-1) !important;
    border-color: var(--accent) !important;
    box-shadow: 0 0 0 2px rgba(34,197,94,.3) !important;
    color: var(--text) !important;
    outline: none;
}

.input-group-text,
.input-group-text.bg-white {
    background-color: var(--surface-1) !important;
    border-color: var(--border) !important;
    color: var(--muted) !important;
}

.rounded-custom {
    border-radius: var(--border-radius-lg) !important;
}

.shadow-custom {
    box-shadow: var(--shadow) !important;
}

/* ============================================
   Public Footer
   ============================================ */

.site-footer {
    background:
        radial-gradient(ellipse 65% 80% at 15% 0%, rgba(45, 212, 191, 0.08) 0%, transparent 62%),
        radial-gradient(ellipse 52% 72% at 85% 0%, rgba(104,169,255,.05) 0%, transparent 64%),
        linear-gradient(180deg, var(--surface-0) 0%, var(--bg-0) 100%);
    border-top: 1px solid var(--border);
    color: var(--text);
}

.footer-brand {
    display: inline-flex;
    color: var(--text) !important;
    font-size: 1.55rem;
    font-weight: 800;
    letter-spacing: 0;
    margin-bottom: 0.85rem;
}

.footer-brand:hover {
    color: var(--accent-2) !important;
}

.footer-summary {
    color: var(--muted);
    line-height: 1.7;
    max-width: 36rem;
}

.footer-contact-link {
    color: var(--accent) !important;
    font-weight: 700;
}

.footer-contact-link:hover {
    color: var(--accent-2) !important;
}

.footer-heading {
    color: var(--text);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

.footer-link-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-link-list li {
    margin-bottom: 0.55rem;
}

.footer-link-list a {
    color: var(--muted);
    font-weight: 500;
}

.footer-link-list a:hover {
    color: var(--accent-2);
}

.footer-social-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.footer-social-links a {
    align-items: center;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    display: flex;
    font-size: 1.2rem;
    height: 2.75rem;
    justify-content: center;
    padding: 0;
    width: 2.75rem;
}

.footer-social-links a:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--accent);
    color: var(--accent-2);
}

.footer-social-links i {
    align-items: center;
    display: inline-flex;
    height: 1.25rem;
    justify-content: center;
    width: 1.25rem;
}

.footer-bottom {
    align-items: center;
    border-top: 1px solid var(--border);
    color: var(--muted);
    display: flex;
    font-size: 0.9rem;
    justify-content: space-between;
    margin-top: 2.5rem;
    padding-top: 1.25rem;
}

@media (max-width: 768px) {
    .footer-bottom {
        align-items: flex-start;
        flex-direction: column;
        gap: 0.4rem;
    }
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 2rem;
    }
    
    .card-img-top {
        height: 180px;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
}

@media (max-width: 576px) {
    .page-header {
        padding: var(--spacing-xl) 0;
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
    
    .card-body {
        padding: var(--spacing-md);
    }
}

/* ============================================
   Animation Classes
   ============================================ */

.fade-in {
    animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

/* ============================================
   Badge Styles
   ============================================ */

.badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.badge-category {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

/* ============================================
   Section Styles
   ============================================ */

.section-gradient {
    background:
        linear-gradient(180deg, rgba(17,27,37,.94) 0%, rgba(11,17,24,.96) 100%),
        radial-gradient(ellipse 70% 42% at 15% 0%, rgba(104,169,255,.08) 0%, transparent 65%);
    color: var(--text-primary);
    padding: var(--spacing-xxl) 0;
}





/* ============================================
   Hero Section Styles
   ============================================ */

.hero-gradient {
    background:
        linear-gradient(90deg, rgba(7,10,15,.94) 0%, rgba(7,10,15,.9) 45%, rgba(7,10,15,.86) 100%),
        radial-gradient(ellipse 80% 50% at 35% 0%, rgba(45,212,191,.12) 0%, transparent 65%),
        radial-gradient(ellipse 52% 42% at 82% 22%, rgba(104,169,255,.1) 0%, transparent 62%),
        url('/images/bg-circuit.png') center center / cover no-repeat,
        linear-gradient(135deg, var(--bg-1) 0%, var(--surface-0) 50%, var(--surface-1) 100%);
    min-height: 100vh;
    position: relative;
    overflow: hidden;
}

.min-vh-75 {
    min-height: 75vh;
}

.text-cyan {
    color: var(--teal-color);
}

.text-teal {
    color: var(--teal-color);
}

.text-aqua {
    color: var(--aqua-color);
}

.text-white-75 {
    color: rgba(255, 255, 255, 0.85);
}

.letter-spacing-wide {
    letter-spacing: 0.1em;
}

.hero-heading {
    font-size: 3.5rem;
    line-height: 1.2;
}

.hero-image-wrapper {
    position: relative;
    animation: float 6s ease-in-out infinite;
    max-width: 450px;
    margin: 0 auto;
}

.hero-image-wrapper img {
    width: 100%;
    height: auto;
    max-height: 550px;
    object-fit: cover;
    border: 4px solid rgba(45,212,191,.78);
    box-shadow:
        0 20px 60px rgba(0, 0, 0, 0.55),
        0 0 0 1px rgba(104,169,255,.18);
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-20px);
    }
}

/* ============================================
   Navigation Styles
   ============================================ */

.navbar-custom {
    background: rgba(10, 16, 23, 0.9);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-custom.scrolled {
    background: rgba(7, 10, 15, 0.96);
    box-shadow: 0 4px 24px rgba(0,0,0,.45);
}

.brand-signature {
    font-family: 'Brush Script MT', cursive;
    font-size: 2rem;
    color: var(--accent-2) !important;
    font-weight: normal;
}

.navbar-dark .nav-link {
    color: var(--text) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    transition: color 0.3s ease;
}

.navbar-dark .nav-link:hover {
    color: var(--accent-2) !important;
}

/* ============================================
   Button Styles
   ============================================ */

.btn-cyan {
    background-color: var(--accent);
    color: #05110F;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: all 0.3s ease;
}

.btn-cyan:hover,
.btn-cyan:focus-visible {
    background-color: var(--accent-2);
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(45,212,191,.34);
    color: #05110F;
}

.btn-cyan-nav {
    background-color: var(--accent);
    color: #05110F;
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-cyan-nav:hover {
    background-color: var(--accent-2);
    color: #05110F;
}

.btn-outline-cyan {
    background-color: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
    border-radius: var(--radius-sm);
    font-weight: 600;
    padding: 0.75rem 2rem;
    transition: all 0.3s ease;
}

.btn-outline-cyan:hover,
.btn-outline-cyan:focus-visible {
    background-color: var(--accent);
    border-color: var(--accent);
    color: #05110F;
    transform: translateY(-2px);
    box-shadow: 0 10px 28px rgba(45,212,191,.34);
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 992px) {
    .hero-heading {
        font-size: 2.5rem;
    }
    
    .hero-gradient {
        min-height: auto;
    }
    
    .navbar-nav {
        padding-top: 1rem;
    }
    
    .btn-cyan-nav {
        margin-top: 1rem;
        display: block;
        width: 100%;
    }
}

@media (max-width: 768px) {
    .hero-heading {
        font-size: 2rem;
    }

    .hero-main-row {
        min-height: auto !important;
        padding-top: 2rem !important;
        padding-bottom: 2.5rem !important;
    }

    .hero-copy {
        text-align: left;
    }

    .hero-copy .letter-spacing-wide {
        font-size: 0.78rem;
    }

    .hero-copy .lead {
        font-size: 1rem;
        line-height: 1.6;
        padding-right: 0 !important;
    }

    .hero-cta .btn {
        flex: 1 1 150px;
        padding: 0.85rem 1rem !important;
    }

    .hero-stats {
        margin-top: 2rem !important;
        margin-bottom: 2rem !important;
    }

    .hero-stats h3 {
        font-size: 1.65rem;
    }

    .hero-stats p {
        font-size: 0.72rem;
        line-height: 1.25;
    }

    .hero-image-wrapper {
        max-width: 300px;
        animation: none;
    }

    .hero-image-wrapper img {
        max-height: 360px;
        border-width: 3px;
    }

    .hero-portrait-column {
        text-align: center;
    }
}

@media (max-width: 576px) {
    .hero-gradient {
        min-height: auto;
    }

    .hero-heading {
        font-size: 2.05rem;
        line-height: 1.18;
        margin-bottom: 1rem !important;
    }

    .hero-main-row {
        padding-top: 1.5rem !important;
    }

    .hero-image-wrapper {
        max-width: 250px;
    }

    .hero-image-wrapper img {
        max-height: 310px;
    }

    .hero-copy .d-flex.align-items-center {
        align-items: flex-start !important;
        flex-direction: column;
        gap: 0.35rem;
        margin-bottom: 2rem !important;
    }

    .hero-copy .vr {
        display: none;
    }
}

/* ============================================
   Additional Homepage Styles
   ============================================ */

.bg-cyan-soft {
    background-color: rgba(20, 184, 166, 0.15);
}

.at-a-glance-section {
    background:
        linear-gradient(180deg, rgba(13,21,30,.95) 0%, rgba(8,13,19,.96) 100%),
        radial-gradient(ellipse 55% 42% at 80% 0%, rgba(243,180,84,.09) 0%, transparent 66%),
        linear-gradient(180deg, var(--surface-0) 0%, var(--bg-1) 100%);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.timeline-panel,
.aboutme-summary,
.aboutme-details,
.aboutme-mini-card {
    background:
        linear-gradient(180deg, rgba(255,255,255,.055) 0%, rgba(255,255,255,.018) 100%),
        rgba(17,27,37,.92);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.timeline-panel {
    padding: 1.5rem;
}

.timeline-panel-header {
    align-items: center;
    border-bottom: 1px solid var(--border);
    display: flex;
    gap: 0.9rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
}

.timeline-panel-header h3,
.aboutme-detail-block h3 {
    color: var(--text);
    font-size: 1.25rem;
    margin: 0;
}

.timeline-icon {
    align-items: center;
    background: rgba(45,212,191,.12);
    border: 1px solid rgba(45,212,191,.35);
    border-radius: 8px;
    color: var(--accent-2);
    display: inline-flex;
    flex: 0 0 auto;
    height: 2.5rem;
    justify-content: center;
    width: 2.5rem;
}

.timeline-list {
    display: grid;
    gap: 1.25rem;
}

.timeline-item {
    border-left: 2px solid rgba(45,212,191,.45);
    padding-left: 1rem;
    position: relative;
}

.timeline-item::before {
    background: var(--accent-2);
    border: 3px solid var(--surface-0);
    border-radius: 50%;
    content: '';
    height: 0.75rem;
    left: -0.44rem;
    position: absolute;
    top: 0.45rem;
    width: 0.75rem;
}

.timeline-date {
    color: var(--accent-2);
    display: block;
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
}

.timeline-item h4 {
    color: var(--text);
    font-size: 1.05rem;
    line-height: 1.35;
    margin-bottom: 0.35rem;
}

.timeline-item p {
    color: var(--muted);
    line-height: 1.6;
    margin-bottom: 0;
}

.aboutme-hero {
    margin-bottom: 0;
}

.aboutme-section {
    background:
        linear-gradient(180deg, var(--bg-1) 0%, var(--surface-0) 100%);
}

.aboutme-side-stack {
    display: grid;
    gap: 1rem;
}

.aboutme-summary {
    padding: 2rem;
}

.aboutme-summary h2 {
    color: var(--text);
    font-size: 2rem;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.aboutme-summary p {
    color: var(--muted);
    margin-bottom: 1rem;
}

.aboutme-link-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

.aboutme-details {
    padding: 2rem;
}

.aboutme-detail-block + .aboutme-detail-block {
    border-top: 1px solid var(--border);
    margin-top: 2rem;
    padding-top: 2rem;
}

.aboutme-detail-block h3 {
    margin-bottom: 1.25rem;
}

.aboutme-mini-card {
    padding: 1.35rem;
}

.aboutme-mini-card h3 {
    color: var(--text);
    font-size: 1.05rem;
    margin-bottom: 1rem;
}

.aboutme-bullet-list {
    color: var(--muted);
    margin: 0.75rem 0 0;
    padding-left: 1.1rem;
}

.aboutme-bullet-list li {
    margin-bottom: 0.45rem;
}

.aboutme-bullet-list li:last-child {
    margin-bottom: 0;
}

.affiliation-logo-grid {
    display: grid;
    gap: 0.8rem;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.affiliation-logo-card,
.skill-logo-card {
    background: rgba(255,255,255,.03);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.9rem;
}

.affiliation-logo-card {
    min-height: 8.5rem;
}

.logo-mark {
    align-items: center;
    background: rgba(34,197,94,.12);
    border: 1px solid rgba(34,197,94,.35);
    border-radius: 8px;
    color: var(--accent-2);
    display: inline-flex;
    font-size: 0.95rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    line-height: 1;
    min-height: 2.35rem;
    padding: 0 0.65rem;
}

.affiliation-logo-card p {
    color: var(--muted);
    font-size: 0.86rem;
    line-height: 1.45;
    margin: 0.65rem 0 0;
}

.skill-logo-grid {
    display: grid;
    gap: 0.8rem;
}

.skill-logo-card {
    display: grid;
    gap: 0.7rem;
}

.skill-logo-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.55rem;
}

.skill-logo-tile {
    align-items: center;
    background: rgba(255,255,255,.92);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: 8px;
    display: inline-flex;
    height: 2.75rem;
    justify-content: center;
    padding: 0.45rem;
    width: 2.75rem;
}

.skill-logo-tile img {
    display: block;
    max-height: 1.75rem;
    max-width: 1.75rem;
    object-fit: contain;
}

.skill-text-logo {
    color: #111827;
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.04em;
    line-height: 1;
}

.skill-logo-card p {
    color: var(--muted);
    line-height: 1.65;
    margin-bottom: 0;
}

.cta-gradient {
    background:
        radial-gradient(ellipse 80% 50% at 50% 50%, rgba(45,212,191,.08) 0%, transparent 60%),
        radial-gradient(ellipse 55% 45% at 90% 18%, rgba(243,180,84,.06) 0%, transparent 64%),
        linear-gradient(135deg, var(--bg-1) 0%, var(--surface-0) 50%, var(--surface-1) 100%);
}

.hover-lift {
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

@media (max-width: 768px) {
    .timeline-panel,
    .aboutme-summary,
    .aboutme-details,
    .aboutme-mini-card {
        padding: 1.25rem;
    }

    .aboutme-summary h2 {
        font-size: 1.55rem;
    }

    .aboutme-link-row .btn {
        flex: 1 1 155px;
    }

    .affiliation-logo-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Art & Photography Gallery Styles
   ============================================ */

.art-hero {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 100%);
    padding: 3rem 0;
}

.bg-dark-custom {
    background-color: var(--bg-primary);
}

.bg-darker-custom {
    background-color: var(--bg-secondary);
}

/* Slideshow Styles */
.slideshow-container {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    background-color: var(--bg-dark);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
}

.slide {
    display: none;
    position: relative;
    width: 100%;
    animation: fadeSlide 0.5s ease-in-out;
}

.slide.active {
    display: block;
}

.slide img {
    width: 100%;
    height: auto;
    max-height: 70vh;
    object-fit: contain;
    display: block;
    background-color: var(--bg-dark);
}

.slide-number {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--text-light);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.slide-prev,
.slide-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.6);
    color: var(--text-light);
    font-size: 2rem;
    padding: 1rem 1.5rem;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
    user-select: none;
    backdrop-filter: blur(10px);
}

.slide-prev:hover,
.slide-next:hover {
    background-color: var(--teal-color);
    color: var(--text-light);
}

.slide-prev {
    left: 1rem;
}

.slide-next {
    right: 1rem;
}

@keyframes fadeSlide {
    from {
        opacity: 0;
        transform: scale(0.98);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Thumbnail Gallery Styles */
.thumbnail-wrapper {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    border: 2px solid var(--border-color);
}

.thumbnail-wrapper:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px rgba(20, 184, 166, 0.3);
    border-color: var(--teal-color);
}

.thumbnail-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform var(--transition-base);
}

.thumbnail-wrapper:hover .thumbnail-image {
    transform: scale(1.1);
}

.thumbnail-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(20, 184, 166, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-fast);
    color: var(--text-light);
}

.thumbnail-wrapper:hover .thumbnail-overlay {
    opacity: 1;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
    .slide-prev,
    .slide-next {
        padding: 0.75rem 1rem;
        font-size: 1.5rem;
    }
    
    .slide img {
        max-height: 50vh;
    }
}

/* ============================================
   Research & Publications Page Styles
   ============================================ */

.research-hero {
    background:
        linear-gradient(180deg, rgba(7,10,15,.9) 0%, rgba(7,10,15,.97) 100%),
        radial-gradient(ellipse 60% 50% at 50% 0%, rgba(45,212,191,.1) 0%, transparent 66%),
        radial-gradient(ellipse 45% 40% at 85% 18%, rgba(104,169,255,.07) 0%, transparent 68%),
        url('/images/bg-circuit.png') center 45% / cover no-repeat,
        linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-mid) 100%);
    padding: 3rem 0;
}

.publication-item {
    background-color: rgba(17,27,37,.92);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin-bottom: 2rem;
    transition: all var(--transition-base);
}

.publication-item:hover {
    border-color: var(--teal-color);
    background-color: rgba(23,38,52,.96);
    transform: translateX(8px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.publication-image-wrapper {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    border: 2px solid var(--border-color);
    transition: border-color var(--transition-base);
}

.publication-item:hover .publication-image-wrapper {
    border-color: var(--teal-color);
}

.publication-image {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-base);
}

.publication-item:hover .publication-image {
    transform: scale(1.05);
}

/* Placeholder for research items without images */
.publication-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--bg-tertiary) 0%, var(--bg-card) 100%);
    border: 2px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
}

.publication-image-placeholder i {
    font-size: 3rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

.publication-item:hover .publication-image-placeholder {
    border-color: var(--teal-color);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-tertiary) 100%);
}

.publication-content {
    padding: 0.5rem 0;
}

.publication-title {
    color: var(--text-light);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.3;
}

.publication-description {
    margin-bottom: 1rem;
}

.publication-point {
    display: flex;
    align-items: flex-start;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.publication-point i {
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.publication-point span {
    flex: 1;
}

@media (max-width: 768px) {
    .publication-item {
        padding: 1.5rem;
    }
    
    .publication-title {
        font-size: 1.25rem;
    }
    
    .publication-item:hover {
        transform: none;
    }
}
/* Publication Metadata Styles */
.publication-meta {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.publication-meta i {
    color: var(--teal-color);
    margin-right: 0.25rem;
}

.bg-teal-badge {
    background-color: var(--teal-color);
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Filter and Search Section Styles */
.bg-darker-custom {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.search-input,
.filter-select {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-light);
    border-radius: var(--border-radius);
    padding: 0.65rem 1rem;
    transition: all var(--transition-fast);
}

.search-input:focus,
.filter-select:focus {
    background-color: var(--bg-tertiary);
    border-color: var(--teal-color);
    box-shadow: 0 0 0 0.2rem rgba(20, 184, 166, 0.2);
    color: var(--text-light);
    outline: none;
}

.search-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

.filter-select option {
    background-color: var(--bg-card);
    color: var(--text-light);
}

.btn-outline-cyan {
    color: var(--teal-color);
    border-color: var(--teal-color);
    background-color: transparent;
    padding: 0.65rem 1rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: all var(--transition-fast);
}

.btn-outline-cyan:hover {
    background-color: var(--teal-color);
    color: var(--text-light);
    border-color: var(--teal-color);
}

.btn-outline-cyan i {
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .search-input,
    .filter-select {
        font-size: 0.9rem;
        padding: 0.6rem 0.85rem;
    }
    
    .btn-outline-cyan {
        padding: 0.6rem 0.85rem;
        font-size: 0.9rem;
    }
}

/* ============================================
   Learn Section Styles
   ============================================ */

.learn-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    height: 100%;
}

.learn-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--teal-color);
}

.learn-card.featured-card {
    border: 2px solid var(--teal-color);
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
}

.learn-card .card-body {
    padding: var(--spacing-lg);
    color: var(--text-primary);
}

.learn-card .card-title {
    color: var(--text-light);
    font-weight: 600;
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-md);
    transition: color var(--transition-fast);
}

.learn-card:hover .card-title {
    color: var(--teal-light);
}

.learn-card .card-text {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
}

.learn-image-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 50%, var(--teal-color) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    font-size: 3rem;
    transition: all var(--transition-base);
}

.learn-card:hover .learn-image-placeholder {
    background: linear-gradient(135deg, var(--teal-dark) 0%, var(--teal-color) 50%, var(--teal-light) 100%);
    transform: scale(1.05);
}

.learn-image-placeholder i {
    opacity: 0.8;
    transition: all var(--transition-base);
}

.learn-card:hover .learn-image-placeholder i {
    opacity: 1;
    transform: scale(1.1);
}

.badge-difficulty {
    background-color: var(--aqua-color) !important;
    color: var(--text-light) !important;
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

/* Responsive adjustments for learn cards */
@media (max-width: 768px) {
    .learn-image-placeholder {
        height: 150px;
        font-size: 2.5rem;
    }
    
    .learn-card .card-body {
        padding: var(--spacing-md);
    }
    
    .learn-card .card-title {
        font-size: var(--font-size-lg);
    }
}