/* ===================================================================
   VEENA PUBLIC SCHOOL - MCQ TEST PLATFORM
   Modern, Vibrant Design with Glassmorphism & Animations
   =================================================================== */

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

/* ===================================================================
   CSS VARIABLES - DESIGN SYSTEM
   =================================================================== */
:root {
    /* Primary Colors - Education Theme */
    --primary-blue: #4F46E5;
    --primary-blue-light: #6366F1;
    --primary-blue-dark: #4338CA;

    /* Accent Colors */
    --accent-purple: #9333EA;
    --accent-pink: #EC4899;
    --accent-orange: #F97316;
    --accent-green: #10B981;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #10B981 0%, #059669 100%);
    --gradient-background: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e3a8a 100%);

    /* Neutral Colors */
    --white: #FFFFFF;
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    --dark-bg: #0F172A;

    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===================================================================
   GLOBAL STYLES & RESET
   =================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
    background-color: #1e1b4b !important;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    /* Solid dark blue fallback */
    background-color: #1e1b4b !important;
    /* Gradient overlay */
    background-image: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #1e3a8a 100%) !important;
    background-attachment: fixed !important;
    color: #FFFFFF !important;
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Animated Background Elements */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: moveBackground 20s linear infinite;
    z-index: -1;
    pointer-events: none;
}

@keyframes moveBackground {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(50px, 50px);
    }
}

/* ===================================================================
   CONTAINER & LAYOUT
   =================================================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

/* ===================================================================
   HEADER / BRANDING
   =================================================================== */
.header {
    text-align: center;
    padding: var(--spacing-2xl) var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    animation: fadeInDown 0.8s ease;
}

.school-logo {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #FFD700, #FFA500, #FF6B6B);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
    letter-spacing: -1px;
}

.school-name {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
    color: var(--white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.platform-subtitle {
    font-size: 1.1rem;
    color: var(--gray-200);
    font-weight: 400;
}

/* ===================================================================
   GLASS CARD COMPONENT
   =================================================================== */
.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    box-shadow: var(--glass-shadow);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    animation: fadeInUp 0.8s ease;
}

.glass-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.5);
}

/* ===================================================================
   LOGIN FORM
   =================================================================== */
#loginScreen {
    max-width: 500px;
    margin: 0 auto;
}

.form-title {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    text-align: center;
    color: var(--white);
}

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

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-100);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-select {
    width: 100%;
    padding: var(--spacing-md);
    font-size: 1rem;
    font-family: 'Inter', sans-serif;
    background: rgba(255, 255, 255, 0.15);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--white);
    transition: all var(--transition-normal);
    outline: none;
}

.custom-select {
    position: relative;
    width: 100%;
}

.select-trigger {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

/* Dropdown wrapper */
.select-dropdown {
    position: absolute;
    width: 100%;
    margin-top: 6px;
    background: rgba(20, 20, 20, 0.95);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    display: none;
    z-index: 999;
}

/* Search input */
.select-search {
    width: 100%;
    padding: var(--spacing-md);
    border: none;
    outline: none;
    font-size: 0.95rem;
    font-family: 'Inter', sans-serif;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

/* Options list */
.select-options {
    max-height: 160px;
    overflow-y: auto;
    list-style: none;
    padding: 0;
    margin: 0;
}

.select-options li {
    padding: var(--spacing-md);
    color: var(--white);
    cursor: pointer;
}

.select-options li:hover {
    background: rgba(255, 255, 255, 0.15);
}

/* Arrow */
.arrow {
    font-size: 0.8rem;
    opacity: 0.8;
}



.form-input::placeholder {
    color: var(--gray-300);
}

.form-input:focus,
.form-select:focus {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-blue-light);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    transform: scale(1.02);
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 1.5rem;
    padding-right: 3rem;
}

.form-select option {
    background: var(--gray-800);
    color: var(--white);
}

.scroll-select {
    max-height: 160px;
    overflow-y: auto;
}

/* ===================================================================
   BUTTONS
   =================================================================== */
.btn {
    padding: var(--spacing-md) var(--spacing-2xl);
    font-size: 1rem;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

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

.btn span {
    position: relative;
    z-index: 1;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    width: 100%;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-submit {
    background: var(--gradient-success);
    color: var(--white);
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.6);
}

/* ===================================================================
   GOOGLE AUTH BUTTON
   =================================================================== */
.google-auth-section {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.google-auth-text {
    font-size: 0.9rem;
    color: var(--gray-300);
    margin-bottom: var(--spacing-md);
}

#authorizeButton {
    background: var(--white);
    color: var(--gray-800);
    padding: var(--spacing-md) var(--spacing-xl);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

#authorizeButton:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

/* ===================================================================
   TEST SCREEN
   =================================================================== */
#testScreen {
    max-width: 900px;
    margin: 0 auto;
}

.test-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.student-info {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.student-info strong {
    color: var(--accent-orange);
}

/* ===================================================================
   QUESTION CARDS
   =================================================================== */
.question-card {
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
    transition: all var(--transition-normal);
    animation: fadeInUp 0.6s ease;
}

.question-card:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateX(5px);
}

.question-number {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.question-text {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--white);
    line-height: 1.6;
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.option-label {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.option-label:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--primary-blue-light);
    transform: translateX(5px);
}

.option-input {
    margin-right: var(--spacing-md);
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-blue);
}

.option-input:checked+.option-text {
    color: var(--accent-orange);
    font-weight: 600;
}

.option-label:has(.option-input:checked) {
    background: rgba(102, 126, 234, 0.2);
    border-color: var(--primary-blue-light);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.option-text {
    flex: 1;
    font-size: 1rem;
    color: var(--gray-100);
    transition: color var(--transition-fast);
}

/* ===================================================================
   RESULTS SCREEN
   =================================================================== */
#resultsScreen {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
}

.results-header {
    margin-bottom: var(--spacing-2xl);
}

.results-icon {
    font-size: 5rem;
    margin-bottom: var(--spacing-md);
    animation: bounceIn 0.8s ease;
}

.results-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.score-display {
    background: rgba(255, 255, 255, 0.1);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.score-number {
    font-size: 4rem;
    font-weight: 800;
    color: var(--accent-green);
    line-height: 1;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 20px rgba(16, 185, 129, 0.5);
}

.score-label {
    font-size: 1.2rem;
    color: var(--gray-200);
}

.feedback-message {
    font-size: 1.2rem;
    color: var(--gray-100);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

/* ===================================================================
   UTILITY CLASSES
   =================================================================== */
.hidden {
    display: none !important;
}

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

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

.error-message {
    background: rgba(239, 68, 68, 0.2);
    border: 2px solid rgba(239, 68, 68, 0.5);
    color: #FCA5A5;
    padding: var(--spacing-md);
    border-radius: var(--radius-sm);
    margin-top: var(--spacing-md);
    text-align: center;
    animation: shake 0.5s ease;
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--white);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

/* ===================================================================
   ANIMATIONS
   =================================================================== */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }

    50% {
        opacity: 1;
        transform: scale(1.05);
    }

    70% {
        transform: scale(0.9);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes shake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===================================================================
   RESPONSIVE DESIGN
   =================================================================== */
@media (max-width: 768px) {
    .container {
        padding: var(--spacing-md);
    }

    .school-logo {
        font-size: 2.5rem;
    }

    .school-name {
        font-size: 1.5rem;
    }

    .platform-subtitle {
        font-size: 0.95rem;
    }

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

    .question-text {
        font-size: 1.1rem;
    }

    .score-number {
        font-size: 3rem;
    }

    .results-title {
        font-size: 2rem;
    }
}

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

    .school-name {
        font-size: 1.2rem;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-lg);
        font-size: 0.9rem;
    }

    .question-card {
        padding: var(--spacing-md);
    }
}