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

:root {
    --bg-color: #faf9f6; /* Marble off-white */
    --text-primary: #2d3748;
    --text-muted: #718096;
    
    --card-bg: rgba(255, 255, 255, 0.75);
    
    --pastel-blue: #8faadc;
    --pastel-blue-hover: #7b99d1;
    --pastel-green: #b5e7a0;
    --pastel-peach: #ffb7b2;
    --pastel-peach-hover: #ff9f99;
    
    --border-light: rgba(0, 0, 0, 0.04);
    --border-color: #e2e8f0;
    
    --shadow-soft: 0 10px 40px -10px rgba(0, 0, 0, 0.05);
    --shadow-glow: 0 0 20px rgba(143, 170, 220, 0.3);
    
    --radius-pill: 9999px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 8px;
    
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
    font-family: 'Inter', sans-serif;
    color: var(--text-primary);
    background-color: var(--bg-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.font-outfit { font-family: 'Outfit', sans-serif; }
.text-muted { color: var(--text-muted); }

/* Backgrounds */
@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.marble-bg {
    background: linear-gradient(-45deg, #faf9f6, #f0f4f8, #e6f0fa, #faf9f6);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    background-attachment: fixed;
}

.glass {
    background: var(--card-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-light);
}

/* Layout Utilities */
.flex { display: flex; }
.flex-column { flex-direction: column; }
.flex-center { display: flex; justify-content: center; align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.align-center { align-items: center; }
.gap-1 { gap: 1rem; }
.gap-2 { gap: 2rem; }
.w-100 { width: 100%; }
.text-center { text-align: center; }
.d-none { display: none !important; }

/* Spacing */
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.px-1 { padding-left: 1rem; padding-right: 1rem; }
.pb-1 { padding-bottom: 1rem; }

/* Cards & Modals */
.card {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    padding: 2rem;
}

.border-bottom { border-bottom: 1px solid var(--border-color); }

.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(250, 249, 246, 0.6);
    backdrop-filter: blur(10px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
}
.modal-content {
    width: 100%;
    max-width: 500px;
}

/* Typography */
h1, h2, h3, h4, h5 { color: var(--text-primary); font-family: 'Outfit', sans-serif; font-weight: 600; }
h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 1.8rem; letter-spacing: -0.02em; }
h3 { font-size: 1.3rem; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-pill);
    font-family: 'Outfit', sans-serif; font-weight: 500; font-size: 1rem;
    border: none; cursor: pointer; transition: var(--transition);
    text-decoration: none;
}
.btn-primary {
    background-color: var(--pastel-blue);
    color: white;
    box-shadow: 0 4px 15px rgba(143, 170, 220, 0.4);
}
.btn-primary:hover {
    background-color: var(--pastel-blue-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}
.btn-secondary {
    background-color: white;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}
.btn-secondary:hover {
    background-color: #f7fafc;
    transform: translateY(-2px);
    box-shadow: var(--shadow-soft);
}
.icon-btn {
    background: transparent; border: none; font-size: 1.2rem;
    color: var(--text-muted); cursor: pointer; transition: var(--transition);
}
.icon-btn:hover { color: var(--text-primary); transform: scale(1.1); }

/* Forms */
.form-group { margin-bottom: 1.5rem; }
label {
    display: block; font-family: 'Outfit', sans-serif; font-weight: 500;
    margin-bottom: 0.5rem; color: var(--text-primary); font-size: 0.95rem;
}
input[type="text"], input[type="password"], input[type="number"], select, textarea {
    width: 100%; padding: 1rem 1.2rem;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    background-color: rgba(255, 255, 255, 0.8);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.02);
    font-family: 'Inter', sans-serif; font-size: 1rem; color: var(--text-primary);
    transition: var(--transition);
}
input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--pastel-blue);
    background-color: #ffffff;
    box-shadow: var(--shadow-glow);
}
.input-icon-wrapper { position: relative; }
.input-icon-wrapper i {
    position: absolute; left: 1.2rem; top: 50%; transform: translateY(-50%);
    color: var(--text-muted); font-size: 1.2rem;
}
.input-icon-wrapper input { padding-left: 3rem; }

/* Custom Checkboxes/Radios as Cards */
.mcq-option-card {
    display: flex; align-items: center; gap: 15px;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: rgba(255,255,255,0.7);
    box-shadow: 0 4px 6px rgba(0,0,0,0.02);
    cursor: pointer; transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.mcq-option-card:hover { 
    border-color: var(--pastel-blue); 
    background: #ffffff; 
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 20px rgba(143, 170, 220, 0.15);
}
.mcq-option-card input[type="radio"] {
    appearance: none; width: 22px; height: 22px;
    border: 2px solid var(--border-color); border-radius: 50%;
    margin: 0; display: grid; place-content: center;
}
.mcq-option-card input[type="radio"]::before {
    content: ""; width: 12px; height: 12px; border-radius: 50%;
    transform: scale(0); transition: 0.2s transform ease-in-out;
    background-color: var(--pastel-blue);
}
.mcq-option-card input[type="radio"]:checked { border-color: var(--pastel-blue); }
.mcq-option-card input[type="radio"]:checked::before { transform: scale(1); }
.mcq-option-card input[type="radio"]:checked + label { color: var(--pastel-blue); font-weight: 600; }
.mcq-option-card label { margin: 0; cursor: pointer; width: 100%; font-family: 'Inter'; }

/* File Upload */
.file-upload-wrapper { position: relative; overflow: hidden; display: inline-block; }
.file-upload-wrapper input[type="file"] {
    position: absolute; left: 0; top: 0; opacity: 0; cursor: pointer; height: 100%; width: 100%;
}
.file-upload-btn {
    background-color: rgba(255,255,255,0.5); border: 2px dashed var(--border-color);
    border-radius: var(--radius-md); padding: 2.5rem 1rem; text-align: center;
    color: var(--text-primary); transition: var(--transition);
}
.file-upload-wrapper:hover .file-upload-btn { border-color: var(--pastel-blue); background-color: #ffffff; }

/* Dashboard Layout */
.dashboard-layout { display: flex; height: 100vh; overflow: hidden; }
.sidebar {
    width: 280px; padding: 2rem 1rem;
    display: flex; flex-direction: column;
    border-right: 1px solid var(--border-color);
}
.nav-list { display: flex; flex-direction: column; gap: 0.5rem; }
.nav-list .btn-secondary {
    justify-content: flex-start; padding: 0.8rem 1.2rem;
    border: none; background: transparent; font-weight: 400; color: var(--text-muted);
}
.nav-list .btn-secondary:hover, .nav-list .btn-secondary.active {
    background: rgba(255,255,255,0.8); color: var(--pastel-blue); font-weight: 500;
}
.main-content { flex: 1; padding: 2rem 4rem; overflow-y: auto; }

/* Split Screen (Login) */
.split-layout { display: flex; min-height: 100vh; }
.split-left {
    flex: 1; 
    background: linear-gradient(-45deg, #8faadc, #b5c7eb, #7b99d1, #a1b8e1);
    background-size: 400% 400%;
    animation: gradientBG 12s ease infinite;
    display: flex; flex-direction: column; justify-content: center; align-items: center;
    color: white; padding: 4rem; text-align: center;
}
.split-right {
    flex: 1; display: flex; justify-content: center; align-items: center;
    background: var(--bg-color); padding: 4rem;
}

.brand img {
    height: 40px; /* Force a consistent small size for logos */
    width: auto;
}

/* Exam Layout */
.exam-nav {
    padding: 1rem 3rem; position: sticky; top: 0; z-index: 100;
    display: flex; justify-content: space-between; align-items: center;
    border-bottom: 1px solid var(--border-color);
}
.exam-timer {
    background: var(--card-bg); padding: 0.5rem 1.5rem;
    border-radius: var(--radius-pill); font-family: 'Outfit'; font-weight: 600;
    color: var(--pastel-blue); box-shadow: var(--shadow-soft);
    display: flex; align-items: center; gap: 8px; font-size: 1.2rem;
}

/* Toasts */
#toast-container { position: fixed; bottom: 2rem; right: 2rem; z-index: 9999; }
.toast {
    background: var(--card-bg); color: var(--text-primary);
    padding: 1rem 1.5rem; border-radius: var(--radius-pill); margin-top: 1rem;
    box-shadow: var(--shadow-soft); display: flex; align-items: center; gap: 12px;
    border-left: 4px solid var(--pastel-green); font-family: 'Outfit', sans-serif;
}
.toast.error { border-left-color: var(--pastel-peach); }

/* Data Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}
.data-table th, .data-table td {
    padding: 1rem 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.data-table th {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 0.5px;
}
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background-color: rgba(255,255,255,0.4); }