/* ===================================
   SMART ATTENDANCE SYSTEM - PREMIUM UI
   Theme: Gold, Black, White, Silver
   =================================== */

:root {
    /* Color Palette */
    --gold: #D4AF37;
    --gold-light: #F4D03F;
    --gold-dark: #B8960F;
    --black: #0A0A0A;
    --black-light: #1A1A1A;
    --white: #FFFFFF;
    --silver: #C0C0C0;
    --silver-light: #E8E8E8;
    --silver-dark: #A0A0A0;
    
    /* Status Colors */
    --success: #10B981;
    --error: #EF4444;
    --warning: #F59E0B;
    --info: #3B82F6;
    
    /* Gradients */
    --gradient-gold: linear-gradient(135deg, var(--gold-dark) 0%, var(--gold) 50%, var(--gold-light) 100%);
    --gradient-dark: linear-gradient(135deg, var(--black) 0%, var(--black-light) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-gold: 0 4px 20px rgba(212, 175, 55, 0.3);
    --shadow-gold-intense: 0 8px 40px rgba(212, 175, 55, 0.6);
    --shadow-gold-glow: 0 0 30px rgba(212, 175, 55, 0.5), 0 0 60px rgba(212, 175, 55, 0.3);
    --shadow-gold-mega: 0 0 40px rgba(212, 175, 55, 0.7), 0 0 80px rgba(212, 175, 55, 0.4), 0 0 120px rgba(212, 175, 55, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===================================
   3D BACKGROUND CANVAS
   =================================== */

#canvas-3d {
    position: fixed;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    opacity: 0.6;
}

/* Gradient overlay for professional look */
#canvas-3d::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, rgba(10, 10, 10, 1) 0%, rgba(10, 10, 10, 0) 30%);
    z-index: 1;
    pointer-events: none;
}

#canvas-3d canvas {
    display: block;
    width: 100%;
    height: 100%;
}

/* Mobile responsive */
@media (max-width: 768px) {
    #canvas-3d {
        width: 100%;
        opacity: 0.3;
    }
    
    #canvas-3d::before {
        background: linear-gradient(to bottom, rgba(10, 10, 10, 1) 0%, rgba(10, 10, 10, 0) 20%);
    }
}

/* ===================================
   ATTENDANCE RATE SECTION
   =================================== */

.attendance-rate-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--gradient-dark);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.section-header h2 {
    color: var(--gold);
    font-size: 1.5rem;
    margin: 0;
}

.view-toggle {
    display: flex;
    gap: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem;
    border-radius: var(--radius-md);
}

.toggle-btn {
    padding: 0.5rem 1rem;
    background: transparent;
    border: none;
    color: var(--silver-light);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.toggle-btn:hover {
    background: rgba(212, 175, 55, 0.1);
    color: var(--gold);
}

.toggle-btn.active {
    background: var(--gradient-gold);
    color: var(--black);
    font-weight: 600;
}

.stats-view {
    animation: fadeIn 0.5s ease;
}

.attendance-progress {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
    color: var(--gold);
    font-weight: 600;
}

.progress-bar-container {
    width: 100%;
    height: 30px;
    background: rgba(0, 0, 0, 0.5);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.progress-bar {
    height: 100%;
    background: var(--gradient-gold);
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 0.5rem;
    color: var(--black);
    font-weight: 700;
}

.progress-bar.low {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%);
}

.progress-bar.medium {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%);
}

.progress-bar.high {
    background: var(--gradient-gold);
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--silver-light);
}

.stat-value.low {
    color: #EF4444;
}

.stat-value.medium {
    color: #F59E0B;
}

.stat-value.high {
    color: var(--gold);
}

@media (max-width: 768px) {
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .view-toggle {
        width: 100%;
    }
    
    .toggle-btn {
        flex: 1;
        text-align: center;
    }
}

/* ===================================
   GLOBAL STYLES
   =================================== */

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

body {
    font-family: 'Poppins', sans-serif;
    background: var(--gradient-dark);
    color: var(--white);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* Animated Background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 50%, rgba(212, 175, 55, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(212, 175, 55, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(192, 192, 192, 0.05) 0%, transparent 50%);
    z-index: -1;
    animation: backgroundShift 20s ease infinite;
}

@keyframes backgroundShift {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   GLASS PANEL EFFECT
   =================================== */

.glass-panel {
    background: rgba(26, 26, 26, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.glass-panel:hover {
    border-color: rgba(212, 175, 55, 0.4);
    box-shadow: var(--shadow-gold);
    transform: translateY(-2px);
}

/* ===================================
   NAVBAR
   =================================== */

.navbar {
    background: var(--gradient-dark);
    border-bottom: 2px solid var(--gold);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-md);
    position: relative;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.navbar-logos {
    flex-shrink: 0;
}

.navbar-logo {
    width: 60px;
    height: 60px;
    filter: drop-shadow(0 0 10px rgba(212, 175, 55, 0.5));
    animation: pulse 3s ease infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.navbar-brand {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.brand-text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    text-align: center;
}

.college-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    letter-spacing: 0.5px;
    font-family: 'Noto Sans Tamil', sans-serif;
}

.college-name-en {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gold);
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
    letter-spacing: 0.5px;
}

.system-name {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--silver-light);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--silver-light);
    font-weight: 500;
}

.user-info i {
    font-size: 1.5rem;
    color: var(--gold);
}

.btn-logout {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid var(--error);
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-logout:hover {
    background: var(--error);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

/* ===================================
   FLASH MESSAGES
   =================================== */

.flash-container {
    position: fixed;
    top: 100px;
    right: var(--spacing-md);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
}

.flash-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    animation: slideInRight 0.3s ease;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
}

@keyframes slideInRight {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.flash-success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

.flash-error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--error);
    color: var(--error);
}

.flash-message i {
    font-size: 1.5rem;
}

.flash-close {
    margin-left: auto;
    background: none;
    border: none;
    color: inherit;
    cursor: pointer;
    font-size: 1.2rem;
    transition: transform var(--transition-fast);
}

.flash-close:hover {
    transform: scale(1.2);
}

/* ===================================
   MAIN CONTENT
   =================================== */

.main-content {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-xl) 0;
}

/* ===================================
   LOGIN PAGE
   =================================== */

.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 200px);
    padding: var(--spacing-md);
}

.login-card {
    width: 100%;
    max-width: 450px;
    padding: var(--spacing-xl);
    animation: fadeInUp 0.5s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: var(--gradient-gold);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--black);
    box-shadow: var(--shadow-gold);
    animation: rotateIcon 3s ease infinite;
}

@keyframes rotateIcon {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(10deg); }
}

.login-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.login-header p {
    color: var(--silver);
    font-size: 0.95rem;
}

.login-form {
    margin-bottom: var(--spacing-lg);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--gold);
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.form-input {
    width: 100%;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1rem;
    font-family: 'Poppins', sans-serif;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--gold);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-input::placeholder {
    color: var(--silver-dark);
}

.btn-primary {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gradient-gold);
    color: var(--black);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Poppins', sans-serif;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    box-shadow: var(--shadow-gold);
    position: relative;
    overflow: hidden;
}

/* Premium glow effect on hover */
.btn-primary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-primary:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-gold-intense);
    filter: brightness(1.1);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: var(--shadow-gold);
}

.login-footer {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

.demo-credentials {
    text-align: center;
}

.demo-credentials h3 {
    font-size: 0.9rem;
    color: var(--gold);
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.demo-grid {
    display: grid;
    gap: var(--spacing-sm);
}

.demo-item {
    padding: var(--spacing-sm);
    background: rgba(212, 175, 55, 0.05);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.demo-item strong {
    color: var(--gold);
}

.demo-item span {
    color: var(--silver-light);
}

/* ===================================
   STATISTICS CARDS
   =================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.attendance-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s ease;
}

.attendance-item:hover {
    border-color: var(--gold);
    transform: translateX(5px);
    background: rgba(212, 175, 55, 0.05);
}

/* Detailed Attendance Item */
.attendance-item-detailed {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.attendance-item-detailed:hover {
    border-color: var(--gold);
    background: rgba(212, 175, 55, 0.05);
    box-shadow: 0 8px 24px rgba(212, 175, 55, 0.3);
}

.attendance-header {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-gold);
    border-radius: var(--radius-md);
    font-size: 1.8rem;
    color: var(--black);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 0.25rem;
    text-shadow: 0 0 10px rgba(212, 175, 55, 0.5);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--silver-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.period-info {
    text-align: center;
    padding: var(--spacing-sm);
}

.period-info.active {
    color: var(--gold);
}

.period-info.inactive {
    color: var(--silver-light);
}

.period-active, .period-inactive {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    align-items: center;
}

.period-time {
    font-size: 0.85rem;
    color: var(--silver-light);
}

.btn-export {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

/* ===================================
   DASHBOARD LAYOUT
   =================================== */

.main-content {
    position: relative;
    z-index: 1;
}

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    position: relative;
    z-index: 1;
}

.dashboard-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.5s ease;
}

.dashboard-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.dashboard-header p {
    color: var(--silver);
    font-size: 1.1rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.dashboard-card {
    padding: var(--spacing-lg);
    animation: fadeInUp 0.5s ease;
}

.card-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.card-header h2 {
    font-size: 1.5rem;
    color: var(--gold);
    margin-bottom: var(--spacing-xs);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-header p {
    color: var(--silver);
    font-size: 0.9rem;
}

.card-body {
    color: var(--white);
}

/* ===================================
   OTP GENERATION (STAFF)
   =================================== */

.period-info {
    padding: var(--spacing-md);
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 500;
    font-size: 1rem;
}

.period-info i {
    color: var(--gold);
    font-size: 1.2rem;
}

.btn-generate {
    font-size: 1.1rem;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    animation: buttonPulse 2s ease-in-out infinite;
}

/* Pulsing glow animation for generate button */
@keyframes buttonPulse {
    0%, 100% {
        box-shadow: var(--shadow-gold);
    }
    50% {
        box-shadow: var(--shadow-gold-intense);
    }
}

.otp-display {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: rgba(212, 175, 55, 0.15);
    border: 2px solid var(--gold);
    border-radius: var(--radius-md);
    text-align: center;
    animation: fadeIn 0.3s ease, pulseGlow 2s ease-in-out infinite;
    box-shadow: var(--shadow-gold-glow);
    position: relative;
    overflow: hidden;
}

/* Animated glow border effect */
.otp-display::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, 
        var(--gold-light), 
        var(--gold), 
        var(--gold-dark), 
        var(--gold), 
        var(--gold-light)
    );
    background-size: 400% 400%;
    border-radius: var(--radius-md);
    z-index: -1;
    animation: gradientShift 3s ease infinite;
    opacity: 0.6;
}

@keyframes gradientShift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

@keyframes pulseGlow {
    0%, 100% { 
        box-shadow: var(--shadow-gold-glow);
    }
    50% { 
        box-shadow: var(--shadow-gold-mega);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.otp-code-wrapper {
    margin-bottom: var(--spacing-md);
}

.otp-label {
    color: var(--silver);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.otp-code {
    font-size: 3rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 0.5rem;
    font-family: 'Courier New', monospace;
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
    animation: megaGlow 1.5s ease infinite;
    position: relative;
    display: inline-block;
}

/* Mega glow effect for OTP code */
@keyframes megaGlow {
    0%, 100% { 
        text-shadow: 
            0 0 10px rgba(212, 175, 55, 0.8),
            0 0 20px rgba(212, 175, 55, 0.6),
            0 0 30px rgba(212, 175, 55, 0.4),
            0 0 40px rgba(212, 175, 55, 0.2);
        transform: scale(1);
    }
    50% { 
        text-shadow: 
            0 0 20px rgba(212, 175, 55, 1),
            0 0 30px rgba(212, 175, 55, 0.8),
            0 0 40px rgba(212, 175, 55, 0.6),
            0 0 60px rgba(212, 175, 55, 0.4),
            0 0 80px rgba(212, 175, 55, 0.2);
        transform: scale(1.05);
    }
}

.otp-timer {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    color: var(--silver-light);
    font-size: 1.1rem;
    font-weight: 500;
}

.otp-timer span {
    color: var(--gold);
    font-weight: 700;
    font-size: 1.3rem;
}

.otp-progress {
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.otp-progress-bar {
    height: 100%;
    background: var(--gradient-gold);
    width: 100%;
    transition: width 0.1s linear;
    box-shadow: 
        0 0 10px rgba(212, 175, 55, 0.7),
        0 0 20px rgba(212, 175, 55, 0.5),
        0 0 30px rgba(212, 175, 55, 0.3);
    animation: progressGlow 1s ease-in-out infinite;
}

@keyframes progressGlow {
    0%, 100% {
        box-shadow: 
            0 0 10px rgba(212, 175, 55, 0.7),
            0 0 20px rgba(212, 175, 55, 0.5);
    }
    50% {
        box-shadow: 
            0 0 15px rgba(212, 175, 55, 0.9),
            0 0 30px rgba(212, 175, 55, 0.7),
            0 0 45px rgba(212, 175, 55, 0.5);
    }
}

.otp-instructions {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--gold);
}

.otp-instructions h3 {
    color: var(--gold);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.otp-instructions ul {
    list-style: none;
    color: var(--silver-light);
}

.otp-instructions li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
}

.otp-instructions li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--gold);
    font-weight: 700;
}

/* ===================================
   OTP ENTRY (STUDENT)
   =================================== */

.otp-input {
    text-align: center;
    font-size: 1.5rem;
    letter-spacing: 0.5rem;
    font-family: 'Courier New', monospace;
    font-weight: 700;
}

.btn-submit-otp {
    margin-top: var(--spacing-md);
}

.otp-message {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    text-align: center;
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

.otp-message.success {
    background: rgba(16, 185, 129, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

.otp-message.error {
    background: rgba(239, 68, 68, 0.2);
    border: 1px solid var(--error);
    color: var(--error);
}

/* ===================================
   ATTENDANCE LIST
   =================================== */

.attendance-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-height: 500px;
    overflow-y: auto;
    padding-right: var(--spacing-xs);
}

.attendance-list::-webkit-scrollbar {
    width: 6px;
}

.attendance-list::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
}

.attendance-list::-webkit-scrollbar-thumb {
    background: var(--gold);
    border-radius: 3px;
}

.attendance-item {
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: var(--radius-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-fast);
}

.attendance-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--gold);
    transform: translateX(5px);
}

.attendance-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.attendance-name,
.attendance-date {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--white);
    font-weight: 500;
}

.attendance-time {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--silver);
    font-size: 0.85rem;
}

.attendance-status {
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
}

/* Detailed Attendance Item */
.attendance-item-detailed {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
    margin-bottom: var(--spacing-md);
    transition: all 0.3s ease;
}

.attendance-item-detailed:hover {
    border-color: var(--gold);
    background: rgba(212, 175, 55, 0.05);
    box-shadow: 0 4px 12px rgba(212, 175, 55, 0.2);
}

.attendance-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.attendance-period {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--silver-light);
    background: rgba(212, 175, 55, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.attendance-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--silver-light);
    font-size: 0.9rem;
}

.detail-item i {
    color: var(--gold);
    width: 20px;
}

.detail-label {
    font-weight: 500;
    color: var(--silver-light);
}

.detail-value {
    color: var(--white);
    font-weight: 600;
}

.detail-value.status-present {
    color: var(--success);
}

/* Staff Attendance Item */
.attendance-item-staff {
    padding: var(--spacing-md);
    background: rgba(0, 0, 0, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid rgba(212, 175, 55, 0.1);
    margin-bottom: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.attendance-item-staff:hover {
    border-color: var(--gold);
    background: rgba(212, 175, 55, 0.05);
    transform: translateX(5px);
}

.attendance-item-staff .attendance-info {
    flex: 1;
}

.attendance-item-staff .attendance-name {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

.student-name {
    font-weight: 600;
    color: var(--white);
    font-size: 1rem;
}

.student-year {
    background: rgba(212, 175, 55, 0.2);
    color: var(--gold);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
}

.attendance-details-row {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.detail-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(0, 0, 0, 0.3);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(212, 175, 55, 0.1);
    font-size: 0.85rem;
    color: var(--silver-light);
}

.detail-badge i {
    color: var(--gold);
}

/* Semester Info Banner */
.semester-info-banner {
    background: linear-gradient(135deg, rgba(212, 175, 55, 0.1), rgba(192, 192, 192, 0.1));
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    justify-content: center;
}

.semester-info-banner i {
    color: var(--gold);
    font-size: 1.5rem;
}

.semester-info-banner span {
    color: var(--silver-light);
    font-size: 0.95rem;
}

.semester-info-banner strong {
    color: var(--gold);
    font-weight: 700;
}

.semester-info-banner .separator {
    color: rgba(212, 175, 55, 0.5);
    font-weight: bold;
}

@media (max-width: 768px) {
    .semester-info-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .semester-info-banner .separator {
        display: none;
    }
}

.status-present {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
    border: 1px solid var(--success);
}

.no-records {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--silver);
}

.no-records i {
    font-size: 3rem;
    color: var(--silver-dark);
    margin-bottom: var(--spacing-sm);
    display: block;
}

/* ===================================
   STATISTICS CARDS
   =================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    animation: fadeInUp 0.5s ease 0.2s backwards;
}

.stat-card {
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-gold);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--black);
    flex-shrink: 0;
}

.stat-info h3 {
    color: var(--silver);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.stat-value {
    color: var(--gold);
    font-size: 2rem;
    font-weight: 700;
}

/* ===================================
   FOOTER
   =================================== */

.footer {
    background: var(--gradient-dark);
    border-top: 2px solid var(--gold);
    padding: var(--spacing-lg) 0;
    text-align: center;
    margin-top: var(--spacing-xl);
}

.footer p {
    color: var(--silver);
    font-size: 0.9rem;
}

/* ===================================
   RESPONSIVE DESIGN
   =================================== */

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar .container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .navbar-menu {
        width: 100%;
        justify-content: space-between;
    }
    
    .dashboard-header h1 {
        font-size: 1.8rem;
    }
    
    .otp-code {
        font-size: 2rem;
        letter-spacing: 0.3rem;
    }
    
    .flash-container {
        right: var(--spacing-sm);
        left: var(--spacing-sm);
        max-width: none;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: var(--spacing-lg);
    }
    
    .dashboard-header h1 {
        font-size: 1.5rem;
        flex-direction: column;
    }
    
    .card-header h2 {
        font-size: 1.2rem;
    }
    
    .otp-code {
        font-size: 1.5rem;
        letter-spacing: 0.2rem;
    }
}

/* ===================================
   UTILITY CLASSES
   =================================== */

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }