/* ================================================================
   AIQM Exam Portal — Global Stylesheet (SaaS Dashboard Theme)
   Brand: Orange (#F97316), White, Soft Pastels
   ================================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
    /* Brand Colors (Orange First) */
    --aiqm-primary:        #F97316;
    --aiqm-primary-dark:   #EA580C;
    --aiqm-primary-light:  #FB923C;
    --aiqm-accent:         #FDBA74;
    --aiqm-accent-light:   #FFEDD5;

    /* Neutrals & Soft Backgrounds */
    --aiqm-white:          #FFFFFF;
    --aiqm-gray-50:        #F7F8FC; /* Soft background */
    --aiqm-gray-100:       #F1F5F9;
    --aiqm-gray-200:       #E2E8F0;
    --aiqm-gray-300:       #CBD5E1;
    --aiqm-gray-500:       #64748B;
    --aiqm-gray-700:       #334155;
    --aiqm-gray-900:       #0F172A;

    /* Pastels for Cards (Mint, Peach, Cream, Lavender) */
    --aiqm-mint:           #D1FAE5;
    --aiqm-mint-dark:      #059669;
    --aiqm-peach:          #FFEDD5;
    --aiqm-peach-dark:     #EA580C;
    --aiqm-cream:          #FEF3C7;
    --aiqm-cream-dark:     #D97706;
    --aiqm-lavender:       #E0E7FF;
    --aiqm-lavender-dark:  #4F46E5;

    /* Semantic */
    --aiqm-success:        #10B981;
    --aiqm-warning:        #F59E0B;
    --aiqm-danger:         #EF4444;

    /* Navbar */
    --navbar-height:       70px;
    --navbar-bg:           #FFFFFF;

    /* Very Subtle Shadows */
    --shadow-sm:    0 2px 4px rgba(0,0,0,0.02), 0 1px 2px rgba(0,0,0,0.01);
    --shadow-md:    0 4px 15px rgba(0,0,0,0.03), 0 2px 6px rgba(0,0,0,0.02);
    --shadow-lg:    0 10px 30px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);

    /* Rounded Radii */
    --radius-sm:    12px;
    --radius-md:    16px;
    --radius-lg:    24px;
    --radius-pill:  999px;

    /* Transition */
    --transition-fast: 0.15s ease;
    --transition-std:  0.25s ease;
}

/* ================================================================
   BASE RESET & TYPOGRAPHY
   ================================================================ */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 15px;
    line-height: 1.6;
    color: var(--aiqm-gray-700);
    background-color: var(--aiqm-gray-50);
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main.page-body {
    flex: 1;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', sans-serif;
    font-weight: 700;
    color: var(--aiqm-gray-900);
    line-height: 1.3;
}

a {
    color: var(--aiqm-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--aiqm-primary-dark);
}

/* ================================================================
   NAVBAR (SaaS Minimal)
   ================================================================ */
.aiqm-navbar {
    background: var(--navbar-bg) !important;
    height: var(--navbar-height);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--aiqm-gray-200);
}

.aiqm-navbar .navbar-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.3px;
    color: var(--aiqm-gray-900) !important;
}

.aiqm-navbar .navbar-brand .brand-logo {
    width: 40px;
    height: 40px;
    background: var(--aiqm-peach);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 900;
    color: var(--aiqm-primary);
    flex-shrink: 0;
}

.aiqm-navbar .navbar-brand .brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.aiqm-navbar .navbar-brand .brand-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--aiqm-gray-900);
}

.aiqm-navbar .navbar-brand .brand-sub {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--aiqm-gray-500);
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.aiqm-navbar .nav-link {
    color: var(--aiqm-gray-500) !important;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    letter-spacing: 0.2px;
    margin: 0 0.2rem;
}

.aiqm-navbar .nav-link:hover,
.aiqm-navbar .nav-link.active {
    color: var(--aiqm-primary-dark) !important;
    background-color: var(--aiqm-peach);
}

.aiqm-navbar .navbar-toggler {
    border-color: transparent;
    padding: 0.3rem 0.6rem;
}

.aiqm-navbar .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba%2830, 41, 59, 1%29' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ================================================================
   FOOTER
   ================================================================ */
.aiqm-footer {
    background-color: var(--aiqm-white);
    color: var(--aiqm-gray-500);
    padding: 2rem 0;
    font-size: 0.85rem;
    margin-top: auto;
    border-top: 1px solid var(--aiqm-gray-200);
}

.aiqm-footer .footer-brand {
    font-weight: 800;
    color: var(--aiqm-gray-900);
    font-size: 0.95rem;
    display: block;
    margin-bottom: 0.25rem;
}

.aiqm-footer .footer-org {
    font-size: 0.8rem;
    color: var(--aiqm-gray-500);
    letter-spacing: 0.3px;
}

.aiqm-footer .footer-divider {
    border-color: var(--aiqm-gray-200);
    margin: 1.25rem 0;
}

.aiqm-footer .footer-copy {
    color: var(--aiqm-gray-500);
    font-size: 0.8rem;
}

/* ================================================================
   FLASH MESSAGES
   ================================================================ */
.flash-container {
    padding: 1rem 0;
}

.flash-container .alert {
    border-radius: var(--radius-md);
    border: none;
    font-size: 0.95rem;
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    background-color: var(--aiqm-white);
    color: var(--aiqm-gray-900);
    border-left: 4px solid var(--aiqm-primary);
}

/* ================================================================
   CARDS
   ================================================================ */
.card {
    border: none !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: var(--shadow-sm) !important;
    transition: box-shadow var(--transition-std), transform var(--transition-std);
    background-color: var(--aiqm-white);
}

.card:hover {
    box-shadow: var(--shadow-md) !important;
}

.card-header {
    background-color: transparent !important;
    border-bottom: 1px solid var(--aiqm-gray-200) !important;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0 !important;
    padding: 1.25rem 1.5rem !important;
}

.card-footer {
    background-color: transparent !important;
    border-top: 1px solid var(--aiqm-gray-200) !important;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg) !important;
}

/* Feature/Hover Card */
.hover-card {
    cursor: pointer;
    transition: transform var(--transition-std), box-shadow var(--transition-std);
}

.hover-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg) !important;
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.2px;
    border-radius: var(--radius-pill);
    transition: all var(--transition-std);
    padding: 0.6rem 1.25rem;
    border: none;
}

.btn-primary {
    background-color: var(--aiqm-primary);
    color: var(--aiqm-white) !important;
    box-shadow: 0 4px 10px rgba(249, 115, 22, 0.25);
}

.btn-primary:hover, .btn-primary:focus {
    background-color: var(--aiqm-primary-dark);
    box-shadow: 0 6px 14px rgba(249, 115, 22, 0.35);
    transform: translateY(-2px);
    color: var(--aiqm-white) !important;
}

.btn-outline-primary {
    color: var(--aiqm-primary);
    background-color: var(--aiqm-peach);
    border: none;
}

.btn-outline-primary:hover {
    background-color: var(--aiqm-primary);
    color: var(--aiqm-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(249, 115, 22, 0.25);
}

.btn-success {
    background-color: var(--aiqm-success);
    color: var(--aiqm-white) !important;
    box-shadow: 0 4px 10px rgba(16, 185, 129, 0.25);
}
.btn-success:hover {
    background-color: #059669;
    transform: translateY(-2px);
    box-shadow: 0 6px 14px rgba(16, 185, 129, 0.35);
}

.btn-lg {
    font-size: 1rem;
    padding: 0.8rem 1.8rem;
}

.btn-pill {
    border-radius: var(--radius-pill) !important;
}

/* ================================================================
   BADGES
   ================================================================ */
.badge {
    font-weight: 600;
    letter-spacing: 0.3px;
    border-radius: var(--radius-pill);
    padding: 0.4em 0.8em;
}

.bg-primary-subtle { background-color: var(--aiqm-peach) !important; color: var(--aiqm-primary-dark) !important; border: none !important;}
.bg-success-subtle { background-color: var(--aiqm-mint) !important; color: var(--aiqm-mint-dark) !important; border: none !important;}
.bg-info-subtle { background-color: var(--aiqm-lavender) !important; color: var(--aiqm-lavender-dark) !important; border: none !important;}
.bg-warning-subtle { background-color: var(--aiqm-cream) !important; color: var(--aiqm-cream-dark) !important; border: none !important;}


/* ================================================================
   FORMS
   ================================================================ */
.form-control, .form-select {
    border: 1px solid var(--aiqm-gray-200);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
    background-color: var(--aiqm-gray-50);
}

.form-control:focus, .form-select:focus {
    border-color: var(--aiqm-primary-light);
    box-shadow: 0 0 0 4px var(--aiqm-peach);
    background-color: var(--aiqm-white);
    outline: none;
}

.form-label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--aiqm-gray-900);
    margin-bottom: 0.5rem;
}

.input-group-text {
    background-color: var(--aiqm-gray-50);
    border: 1px solid var(--aiqm-gray-200);
    border-radius: var(--radius-sm);
}

/* ================================================================
   LIST GROUP
   ================================================================ */
.list-group-item {
    border-color: var(--aiqm-gray-200);
    font-size: 0.95rem;
    border-radius: var(--radius-md) !important;
    margin-bottom: 0.5rem;
    border: 1px solid var(--aiqm-gray-200) !important;
    transition: all var(--transition-fast);
}

/* ================================================================
   HOMEPAGE — HERO SECTION (Apple Inspired)
   ================================================================ */
.hero-section {
    background-color: var(--aiqm-white);
    padding: 10rem 0 8rem;
    position: relative;
    overflow: hidden;
    text-align: center;
}

/* Elegant ultra-soft mesh gradient background */
.hero-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 50% 0%, rgba(249, 115, 22, 0.03) 0%, transparent 60%),
                radial-gradient(circle at 80% 80%, rgba(245, 245, 247, 1) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.hero-title {
    font-size: clamp(3.5rem, 7vw, 5.5rem);
    font-weight: 800;
    color: #1D1D1F;
    line-height: 1.05;
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
    opacity: 0;
    animation: fade-up 1s cubic-bezier(0.16, 1, 0.3, 1) 0.2s forwards;
}

.hero-subtitle {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    color: #86868B;
    font-weight: 500;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.5;
    letter-spacing: -0.01em;
    opacity: 0;
    animation: fade-up 1s cubic-bezier(0.16, 1, 0.3, 1) 0.4s forwards;
}

/* Premium Apple-style primary button */
.btn-apple-primary {
    background-color: #1D1D1F;
    color: #FFFFFF !important;
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: -0.01em;
    padding: 1.1rem 2.5rem;
    border-radius: 999px;
    border: none;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1), background-color 0.4s ease;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.1);
}

.btn-apple-primary:hover {
    transform: scale(1.03);
    background-color: #000000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

.hero-controls {
    opacity: 0;
    animation: fade-up 1s cubic-bezier(0.16, 1, 0.3, 1) 0.6s forwards;
}

@keyframes fade-up {
    0% { opacity: 0; transform: translateY(30px); }
    100% { opacity: 1; transform: translateY(0); }
}

/* ================================================================
   HOMEPAGE — FEATURE CARDS (Apple Minimal)
   ================================================================ */
.features-section {
    padding: 7rem 0 8rem;
    background-color: #F5F5F7;
    position: relative;
    border-top: 1px solid rgba(0,0,0,0.03);
}

.features-section .section-label {
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--aiqm-primary);
    display: block;
    margin-bottom: 1rem;
}

.features-section .section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #1D1D1F;
    margin-bottom: 1.25rem;
    letter-spacing: -0.03em;
    line-height: 1.1;
}

.features-section .section-desc {
    font-size: 1.2rem;
    color: #86868B;
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.5;
}

.feature-card {
    background: #FFFFFF;
    border: 1px solid rgba(0,0,0,0.04) !important;
    border-radius: 32px !important;
    padding: 3.5rem 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.03) !important;
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    height: 100%;
    position: relative;
    overflow: hidden;
    text-align: left;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.08) !important;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    background: #F5F5F7;
    color: var(--aiqm-primary);
    box-shadow: none;
    transition: transform 0.4s ease, background-color 0.4s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    background: rgba(249, 115, 22, 0.1);
}

.feature-card h5 {
    font-size: 1.4rem;
    font-weight: 700;
    color: #1D1D1F;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.feature-card p {
    font-size: 1.05rem;
    color: #86868B;
    line-height: 1.6;
    margin-bottom: 0;
}

/* ================================================================
   HOMEPAGE — CTA SECTION
   ================================================================ */
.cta-section {
    padding: 5rem 0;
    background: var(--aiqm-white);
    position: relative;
    overflow: hidden;
    border-top: 1px solid var(--aiqm-gray-200);
}

/* ================================================================
   ENTRY PAGE FORM CARD
   ================================================================ */
.entry-card {
    border-radius: var(--radius-lg) !important;
    overflow: hidden;
    box-shadow: var(--shadow-md) !important;
    border: none !important;
    background-color: var(--aiqm-white);
}

.entry-card .card-header {
    background: var(--aiqm-white) !important;
    border-bottom: 1px solid var(--aiqm-gray-200) !important;
    padding: 2rem 1.5rem 1rem !important;
}

/* ================================================================
   EXAM TIMER
   ================================================================ */
#exam-timer {
    font-family: 'Inter', monospace;
    font-variant-numeric: tabular-nums;
    background-color: var(--aiqm-white) !important;
    border: 1px solid var(--aiqm-gray-200) !important;
    box-shadow: var(--shadow-sm);
}

/* ================================================================
   PROGRESS BAR
   ================================================================ */
.progress {
    border-radius: var(--radius-pill);
    background-color: var(--aiqm-gray-200);
    height: 8px !important;
}

.progress-bar {
    border-radius: var(--radius-pill);
    background-color: var(--aiqm-primary) !important;
    transition: width 0.4s ease;
}

/* ================================================================
   ADMIN PANEL
   ================================================================ */
.admin-section-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--aiqm-gray-900);
}

.table {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.table th {
    font-weight: 600;
    color: var(--aiqm-gray-500);
    background-color: var(--aiqm-gray-50) !important;
    border-bottom: 1px solid var(--aiqm-gray-200);
}

.table td {
    vertical-align: middle;
    border-bottom: 1px solid var(--aiqm-gray-100);
}

/* ================================================================
   UTILITY CLASSES
   ================================================================ */
.text-primary-brand { color: var(--aiqm-primary) !important; }
.bg-primary-brand   { background-color: var(--aiqm-primary) !important; }

/* Palette Colors */
.palette-unanswered {
    background-color: #FFF5F5 !important;
    border: 1px solid #FFE4E4 !important;
    color: #5C3D3D !important;
}
.shadow-brand       { box-shadow: 0 4px 18px rgba(249, 115, 22, 0.22) !important; }

.fw-800 { font-weight: 800 !important; }
.fw-700 { font-weight: 700 !important; }
.fw-600 { font-weight: 600 !important; }

.letter-tight { letter-spacing: -0.4px; }
.letter-wide  { letter-spacing: 0.5px; }

.rounded-xl { border-radius: var(--radius-lg) !important; }
.rounded-lg  { border-radius: var(--radius-md) !important; }
.rounded-sm  { border-radius: var(--radius-sm) !important; }

/* ================================================================
   RESPONSIVE ADJUSTMENTS
   ================================================================ */
@media (max-width: 768px) {
    .hero-section {
        padding: 4rem 0 3.5rem;
        text-align: center;
    }
    .hero-subtitle {
        margin-bottom: 2rem;
    }
    .features-section {
        padding: 4rem 0;
    }
    .cta-section {
        padding: 4rem 0;
        text-align: center;
    }
    .aiqm-navbar .navbar-brand .brand-sub {
        display: none;
    }
}

/* ================================================================
   STUDENT FLOW (Apple Inspired Additions)
   ================================================================ */
.apple-glass-bg {
    background-color: #F5F5F7;
    min-height: 100vh;
    animation: fade-up 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.apple-card-soft {
    background: #FFFFFF;
    border: 1px solid rgba(0,0,0,0.04) !important;
    border-radius: 28px !important;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04) !important;
    overflow: hidden;
}

.apple-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.apple-input-icon {
    position: absolute;
    left: 1.25rem;
    color: #86868B;
    font-size: 1.1rem;
    pointer-events: none;
    z-index: 2;
}

.apple-input {
    background-color: #F5F5F7 !important;
    border: 1px solid rgba(0,0,0,0.03) !important;
    border-radius: 16px !important;
    padding: 1rem 1.25rem 1rem 3rem !important; /* Extra padding on left for icon */
    font-size: 1rem !important;
    color: #1D1D1F !important;
    transition: all 0.3s ease !important;
    width: 100%;
}

.apple-input:focus {
    background-color: #FFFFFF !important;
    border-color: rgba(249, 115, 22, 0.3) !important;
    box-shadow: 0 0 0 4px rgba(249, 115, 22, 0.05) !important;
    outline: none;
}

.apple-input-wrapper:focus-within .apple-input-icon {
    color: #1D1D1F;
}

.apple-pill-soft-green {
    background-color: rgba(16, 185, 129, 0.1) !important;
    color: #059669 !important;
    border: none !important;
    font-size: 0.9rem !important;
    padding: 0.4rem 1rem !important;
    border-radius: 999px;
    font-weight: 600;
}

.apple-pill-soft-gray {
    background-color: #F5F5F7 !important;
    color: #86868B !important;
    border: none !important;
    font-size: 0.9rem !important;
    padding: 0.4rem 1rem !important;
    border-radius: 999px;
    font-weight: 600;
}

.apple-pill-soft-orange {
    background-color: rgba(249, 115, 22, 0.1) !important;
    color: #EA580C !important;
    border: none !important;
    font-size: 0.9rem !important;
    padding: 0.4rem 1rem !important;
    border-radius: 999px;
    font-weight: 600;
}

.apple-alert-warm {
    background-color: #FEF8F3;
    border: 1px solid rgba(249, 115, 22, 0.1);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 4px 12px rgba(249, 115, 22, 0.02);
}

/* ================================================================
   EXAM FOCUS MODE
   ================================================================ */
body.exam-mode .aiqm-navbar,
body.exam-mode .aiqm-footer {
    display: none !important;
}

.exam-chrome-transition {
    transition: transform 350ms ease, opacity 350ms ease !important;
}

.exam-chrome-hide-up {
    transform: translateY(-100%) !important;
    opacity: 0 !important;
    pointer-events: none !important;
}

.exam-chrome-hide-fade {
    opacity: 0 !important;
    pointer-events: none !important;
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
}