/* ============================================
   RIGEL INTERVIEW PORTAL — Design System
   Inspired by Rigel Foundation Brochure
   ============================================ */

/* --- CSS Variables --- */
:root {
    /* Sidebar Blues */
    --sidebar-bg: linear-gradient(180deg, #0a1a3a 0%, #0d2149 40%, #0f2b5e 100%);
    --sidebar-width: 280px;
    --sidebar-text: #c8d8ec;
    --sidebar-heading: #ffffff;
    --sidebar-accent: #38b6ff;
    --sidebar-hover: rgba(56, 182, 255, 0.12);

    /* Content Area */
    --content-bg: #faf5ef;
    --content-bg-mesh: 
        radial-gradient(ellipse at 10% 20%, rgba(255, 180, 160, 0.25) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 10%, rgba(180, 210, 255, 0.2) 0%, transparent 40%),
        radial-gradient(ellipse at 60% 80%, rgba(255, 220, 180, 0.2) 0%, transparent 45%),
        radial-gradient(ellipse at 20% 90%, rgba(200, 180, 255, 0.15) 0%, transparent 40%);

    /* Text */
    --text-primary: #1a2a4a;
    --text-secondary: #4a5a7a;
    --text-muted: #8a95aa;

    /* Cards */
    --card-bg: rgba(255, 255, 255, 0.75);
    --card-border: rgba(0, 40, 100, 0.08);
    --card-shadow: 0 4px 20px rgba(0, 20, 60, 0.06);
    --card-shadow-hover: 0 12px 40px rgba(0, 20, 60, 0.12);

    /* Buttons */
    --btn-primary-bg: linear-gradient(135deg, #0d2149, #1a3a6e);
    --btn-primary-hover: linear-gradient(135deg, #1a3a6e, #2a5a9e);
    --btn-outline-border: #0d2149;
    --btn-outline-text: #0d2149;

    /* Misc */
    --border-light: rgba(0, 40, 100, 0.08);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Segoe UI', sans-serif;
    color: var(--text-primary);
    background-color: var(--content-bg);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

img {
    max-width: 100%;
    display: block;
}

/* --- App Layout --- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
/* Sidebar has been removed; navigation is now in the bottom footer. */


.sidebar-header {
    padding: 2.5rem 1.8rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.sidebar-brand-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sidebar-heading);
    letter-spacing: -0.5px;
    line-height: 1.2;
}

.sidebar-brand-subtitle {
    font-size: 0.78rem;
    color: var(--sidebar-accent);
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
}

.sidebar-nav {
    flex: 1;
    padding: 1.5rem 0;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin-bottom: 2px;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.9rem;
    padding: 0.75rem 1.8rem;
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--sidebar-text);
    border-right: 3px solid transparent;
    transition: all 0.25s ease;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: var(--sidebar-hover);
    color: var(--sidebar-heading);
    border-right-color: var(--sidebar-accent);
}

.sidebar-nav a i {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
    color: var(--sidebar-accent);
    opacity: 0.7;
    transition: opacity 0.25s;
}

.sidebar-nav a:hover i,
.sidebar-nav a.active i {
    opacity: 1;
}

.sidebar-section-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.3);
    padding: 1.2rem 1.8rem 0.5rem;
    font-weight: 600;
}

.sidebar-footer {
    padding: 1.5rem 1.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.3);
    line-height: 1.6;
}

.sidebar-footer a {
    color: var(--sidebar-accent);
    opacity: 0.7;
}

.sidebar-footer a:hover {
    opacity: 1;
}

/* --- Main Content Area --- */
.main-content {
    flex: 1;
    margin-right: 0;
    margin-left: 0;
    background-color: var(--content-bg);
    background-image: var(--content-bg-mesh);
    background-attachment: fixed;
    min-height: 100vh;
}


/* --- Hero Section (Premium Split) --- */
.hero-split {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 80vh;
    align-items: stretch;
    gap: 0;
}

.hero-text-panel {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4rem 3.5rem;
    background: linear-gradient(160deg, #0a1628 0%, #0f2847 35%, #133a6e 65%, #1a4f8a 100%);
    position: relative;
    overflow: hidden;
}

/* Ambient glow effects on the panel */
.hero-text-panel::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 500px;
    height: 500px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(56, 182, 255, 0.12) 0%, transparent 70%);
    pointer-events: none;
    animation: float 8s ease-in-out infinite;
}

.hero-text-panel::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -15%;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(99, 179, 237, 0.08) 0%, transparent 70%);
    pointer-events: none;
    animation: float 10s ease-in-out infinite reverse;
}

.hero-text-panel-content {
    position: relative;
    z-index: 2;
    max-width: 720px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* Decorative accent line */
.hero-decorative-line {
    width: 48px;
    height: 3px;
    background: linear-gradient(90deg, #5ba3d9, #8ecae6);
    border-radius: 4px;
    margin-bottom: 2rem;
    margin-left: auto;
    margin-right: auto;
    animation: shimmer 3s ease-in-out infinite;
}

/* Hero Title */
.hero-title {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    margin-bottom: 1.5rem;
    line-height: 1;
}

.hero-title-main {
    font-family: 'Outfit', sans-serif;
    font-size: 4.5rem;
    font-weight: 800;
    color: #ffffff;
    letter-spacing: -2px;
    text-shadow: 0 2px 30px rgba(0, 0, 0, 0.15);
}

.hero-title-accent {
    font-family: 'Outfit', sans-serif;
    font-size: 3.8rem;
    font-weight: 700;
    color: #38b6ff;
    letter-spacing: -1.5px;
    text-shadow: 0 2px 20px rgba(56, 182, 255, 0.2);
}

/* Tagline */
.hero-tagline {
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    color: #ffffff;
    letter-spacing: 0.5px;
    line-height: 1.6;
    margin-bottom: 1.8rem;
}

/* Divider */
.hero-divider {
    width: 100%;
    max-width: 280px;
    height: 1px;
    background: linear-gradient(90deg, rgba(56, 182, 255, 0.4), rgba(56, 182, 255, 0.05));
    margin-bottom: 1.5rem;
    margin-left: auto;
    margin-right: auto;
}

/* Org info */
.hero-org-info {
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    letter-spacing: 0.3px;
    margin-bottom: 2.5rem;
}

/* CTA Button */
.hero-cta {
    background: #ffffff !important;
    color: #0a1628 !important;
    border: 2px solid #ffffff;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-cta:hover {
    background: #38b6ff !important;
    color: #ffffff !important;
    border-color: #38b6ff;
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(56, 182, 255, 0.4);
}

/* --- Hero Left (Brochure Image) --- */
.hero-image-panel {
    height: 100%;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(145deg, #e8f1fb 0%, #f0f6fc 50%, #eaf2fa 100%);
}

.hero-image-panel-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 40, 71, 0.03) 0%, transparent 30%, transparent 70%, rgba(15, 40, 71, 0.02) 100%);
    z-index: 2;
    pointer-events: none;
}

.hero-image-panel img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    object-position: center;
    padding: 2rem;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-image-panel:hover img {
    transform: scale(1.03);
}

/* --- Sidebar Logo --- */
.sidebar-logo {
    width: 52px;
    height: auto;
    object-fit: contain;
    margin-bottom: 0.8rem;
    border-radius: 8px;
    opacity: 0.95;
    transition: opacity 0.3s ease;
}

.sidebar-logo:hover {
    opacity: 1;
}

/* --- Section Styles --- */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 3rem;
}

.section-header {
    text-align: center;
    max-width: 650px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: #0d2149;
    margin-bottom: 0.8rem;
}

.section-header p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.section-divider {
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #0d2149, #38b6ff);
    margin: 0 auto 1rem;
    border-radius: 50px;
}

/* --- Internship Cards Grid --- */
.internships-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.8rem;
}

.internship-card {
    background: var(--card-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    display: flex;
    flex-direction: column;
    box-shadow: var(--card-shadow);
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.internship-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    opacity: 0;
    transition: opacity 0.35s ease;
}

.internship-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--card-shadow-hover);
    border-color: rgba(0, 40, 100, 0.12);
}

.internship-card:hover::before {
    opacity: 1;
}

/* Card accent colors */
.internship-card[data-color="red"]::before { background: linear-gradient(90deg, #ff4d6d, #ff758c); }
.internship-card[data-color="blue"]::before { background: linear-gradient(90deg, #38b6ff, #004aad); }
.internship-card[data-color="green"]::before { background: linear-gradient(90deg, #10b981, #059669); }
.internship-card[data-color="purple"]::before { background: linear-gradient(90deg, #8b5cf6, #6d28d9); }

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    margin-bottom: 1.2rem;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.internship-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: #0d2149;
}

.internship-card .card-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.2rem;
    flex-grow: 1;
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
}

.card-meta-item {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.78rem;
    color: var(--text-secondary);
    background: rgba(13, 33, 73, 0.04);
    padding: 0.3rem 0.7rem;
    border-radius: 6px;
    font-weight: 500;
}

.card-meta-item i {
    font-size: 0.7rem;
    color: #38b6ff;
}

.card-actions {
    display: flex;
    gap: 0.8rem;
    margin-top: auto;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.65rem 1.4rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.88rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--btn-primary-bg);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(13, 33, 73, 0.2);
}

.btn-primary:hover {
    background: var(--btn-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(13, 33, 73, 0.25);
    color: #ffffff;
}

.btn-outline {
    background: transparent;
    color: var(--btn-outline-text);
    border: 1.5px solid var(--btn-outline-border);
}

.btn-outline:hover {
    background: #0d2149;
    color: #ffffff;
    transform: translateY(-2px);
}

.btn-large {
    padding: 0.85rem 2rem;
    font-size: 1rem;
}

/* --- Bottom Navigation Footer --- */
.bottom-nav-footer {
    background: var(--sidebar-bg);
    color: var(--sidebar-text);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.bottom-nav-inner {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3.5rem 3rem 2.5rem;
    display: flex;
    gap: 3rem;
    align-items: flex-start;
}

/* Brand area */
.bottom-nav-brand {
    flex: 1.5;
    min-width: 220px;
}

.bottom-nav-brand-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.2rem;
}

.bottom-nav-logo {
    width: 48px;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    opacity: 0.95;
    flex-shrink: 0;
}

.bottom-nav-brand-title {
    display: block;
    font-family: 'Outfit', sans-serif;
    font-size: 1.15rem;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.bottom-nav-brand-sub {
    display: block;
    font-size: 0.72rem;
    color: var(--sidebar-accent);
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    margin-top: 0.2rem;
}

.bottom-nav-tagline {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.45);
    line-height: 1.7;
    margin-bottom: 1rem;
}

.bottom-nav-admin-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: 0.75rem;
    color: var(--sidebar-accent);
    opacity: 0.7;
    transition: opacity 0.25s;
}

.bottom-nav-admin-link:hover {
    opacity: 1;
}

/* Nav columns */
.bottom-nav-col {
    flex: 1;
    min-width: 140px;
}

.bottom-nav-heading {
    font-family: 'Outfit', sans-serif;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.3);
    margin-bottom: 1rem;
}

.bottom-nav-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.bottom-nav-col ul li a {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.87rem;
    font-weight: 500;
    color: var(--sidebar-text);
    transition: color 0.25s ease;
}

.bottom-nav-col ul li a i {
    font-size: 0.8rem;
    color: var(--sidebar-accent);
    opacity: 0.7;
    width: 16px;
    text-align: center;
    transition: opacity 0.25s;
}

.bottom-nav-col ul li a:hover {
    color: #ffffff;
}

.bottom-nav-col ul li a:hover i,
.bottom-nav-col ul li a.active i {
    opacity: 1;
}

.bottom-nav-col ul li a.active {
    color: var(--sidebar-accent);
    font-weight: 600;
}

/* Bottom bar */
.bottom-nav-bar {
    border-top: 1px solid rgba(255, 255, 255, 0.06);
    padding: 1.2rem 3rem;
    text-align: center;
    max-width: 100%;
}

.bottom-nav-bar p {
    font-size: 0.78rem;
    color: rgba(255, 255, 255, 0.28);
}

.bottom-nav-bar a {
    color: var(--sidebar-accent);
    opacity: 0.7;
    font-weight: 500;
}

.bottom-nav-bar a:hover {
    opacity: 1;
}


/* Mobile toggle and overlay removed — nav is in footer now */


/* --- Page Content (for sub-pages like details, forms) --- */
.page-content {
    padding: 3rem;
    max-width: 1000px;
    margin: 0 auto;
    min-height: 70vh;
}

/* --- Forms (reused for application form, etc.) --- */
.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid rgba(0, 40, 100, 0.1);
    border-radius: 10px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #38b6ff;
    box-shadow: 0 0 0 3px rgba(56, 182, 255, 0.12);
    background: #ffffff;
}

/* --- Glass Card (used in details pages) --- */
.glass-container {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-md);
}

/* --- Animations --- */
.fade-in-up {
    animation: fadeInUp 0.7s ease-out forwards;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

@keyframes shimmer {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

@keyframes shimmerText {
    0% { background-position: 0% center; }
    50% { background-position: 100% center; }
    100% { background-position: 0% center; }
}

.stagger-1 { animation-delay: 0.1s; opacity: 0; }
.stagger-2 { animation-delay: 0.2s; opacity: 0; }
.stagger-3 { animation-delay: 0.3s; opacity: 0; }
.stagger-4 { animation-delay: 0.4s; opacity: 0; }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero-split {
        grid-template-columns: 1fr;
        min-height: auto;
    }

    .hero-text-panel {
        padding: 3.5rem 2.5rem;
        text-align: center;
        align-items: center;
    }

    .hero-text-panel-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .hero-decorative-line {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-divider {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-title-main {
        font-size: 3.5rem;
    }

    .hero-title-accent {
        font-size: 2.8rem;
    }

    .hero-image-panel {
        height: 55vh;
        order: -1;
    }

    .hero-image-panel img {
        padding: 1.5rem;
    }

    .internships-grid {
        grid-template-columns: 1fr;
    }

    .section-container {
        padding: 3rem 1.5rem;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .sidebar {
        transform: translateX(100%);
    }

    .sidebar.open {
        transform: translateX(0);
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.3);
    }

    .sidebar-overlay.active {
        display: block;
    }

    .main-content {
        margin-right: 0;
        margin-left: 0;
    }

    /* Bottom footer nav responsive stacking */
    .bottom-nav-inner {
        flex-wrap: wrap;
        gap: 2rem;
        padding: 2.5rem 1.5rem 2rem;
    }

    .bottom-nav-brand {
        flex: 100%;
    }

    .bottom-nav-col {
        flex: 1;
        min-width: 120px;
    }


    .hero-title-main {
        font-size: 2.8rem;
    }

    .hero-title-accent {
        font-size: 2.2rem;
    }

    .hero-tagline {
        font-size: 0.95rem;
    }

    .hero-image-panel {
        height: 45vh;
    }

    .hero-image-panel img {
        padding: 1rem;
    }

    .section-container {
        padding: 2.5rem 1.2rem;
    }

    .section-header h2 {
        font-size: 1.6rem;
    }

    .card-actions {
        flex-direction: column;
    }

    .card-actions .btn {
        width: 100%;
    }

    .site-footer {
        padding: 1.5rem 1rem;
    }

    .page-content {
        padding: 2rem 1.2rem;
    }
}

/* --- Utility: Hide google translate banner --- */
.goog-te-banner-frame.skiptranslate,
.goog-te-gadget-icon {
    display: none !important;
}

body {
    top: 0px !important;
}

/* --- Highlight text gradient --- */
.highlight {
    background: linear-gradient(135deg, #38b6ff, #004aad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}