/* HPD Sergeant Exam Study Website - Styles */

/* CSS Variables */
:root {
    --primary-navy: #1B365D;
    --secondary-gray: #6B7280;
    --accent-orange: #FF6B35;
    --success-green: #059669;
    --alert-red: #DC2626;
    --info-blue: #2563EB;
    --clean-white: #FFFFFF;
    --light-gray: #F9FAFB;
    --border-gray: #E5E7EB;
    --shadow-light: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --border-radius: 8px;
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--primary-navy);
    background-color: var(--clean-white);
    background-image: url('resources/background-pattern.png');
    background-size: 400px 400px;
    background-repeat: repeat;
    background-attachment: fixed;
    background-blend-mode: soft-light;
    background-opacity: 0.05;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

h1 { font-size: 3.5rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: 1rem;
    color: var(--secondary-gray);
}

/* Layout Components */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.section {
    padding: 4rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--secondary-gray);
    max-width: 600px;
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(27, 54, 93, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-medium);
}

.navbar.scrolled {
    background: rgba(27, 54, 93, 0.98);
    box-shadow: var(--shadow-medium);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clean-white);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: "🚔";
    font-size: 1.8rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-link {
    color: var(--clean-white);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--accent-orange);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-orange);
    transition: var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--clean-white);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-navy) 0%, #2D4A6B 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('resources/hero-police-officer.png') center/cover no-repeat;
    opacity: 0.3;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    color: var(--clean-white);
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    color: var(--clean-white);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.hero-cta {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-medium);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    min-height: 44px;
}

.btn-primary {
    background: var(--accent-orange);
    color: var(--clean-white);
    box-shadow: var(--shadow-light);
}

.btn-primary:hover {
    background: #E55A2B;
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn-secondary {
    background: var(--clean-white);
    color: var(--primary-navy);
    border: 2px solid var(--primary-navy);
}

.btn-secondary:hover {
    background: var(--primary-navy);
    color: var(--clean-white);
    transform: translateY(-2px);
}

.btn-danger {
    background: var(--alert-red);
    color: var(--clean-white);
}

.btn-danger:hover {
    background: #B91C1C;
    transform: translateY(-2px);
}

/* Feature Cards */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--clean-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    transition: var(--transition-medium);
    border: 1px solid var(--border-gray);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-navy);
}

.feature-description {
    color: var(--secondary-gray);
    margin-bottom: 1.5rem;
}

/* Quiz Styles */
.quiz-container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.quiz-card {
    background: var(--clean-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    padding: 2rem;
    margin-bottom: 2rem;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-gray);
}

.question-topic {
    background: var(--accent-orange);
    color: var(--clean-white);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
}

.question-progress {
    color: var(--secondary-gray);
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-gray);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 2rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-orange), var(--success-green));
    transition: width var(--transition-medium);
}

.question-text {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    line-height: 1.4;
    color: var(--primary-navy);
}

.options-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.option-btn {
    display: flex;
    align-items: center;
    text-align: left;
    padding: 1rem 1.5rem;
    background: var(--light-gray);
    border: 2px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-fast);
    font-size: 1rem;
    min-height: 60px;
}

.option-btn:hover {
    background: var(--clean-white);
    border-color: var(--accent-orange);
    transform: translateX(5px);
}

.option-btn.selected {
    background: var(--accent-orange);
    color: var(--clean-white);
    border-color: var(--accent-orange);
}

.option-btn.correct {
    background: var(--success-green);
    color: var(--clean-white);
    border-color: var(--success-green);
}

.option-btn.incorrect {
    background: var(--alert-red);
    color: var(--clean-white);
    border-color: var(--alert-red);
}

.option-letter {
    font-weight: 700;
    margin-right: 1rem;
    min-width: 24px;
}

.quiz-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Feedback Styles */
.feedback-card {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.feedback-card.correct {
    background: rgba(5, 150, 105, 0.1);
    border-left-color: var(--success-green);
}

.feedback-card.incorrect {
    background: rgba(220, 38, 38, 0.1);
    border-left-color: var(--alert-red);
}

.feedback-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.feedback-icon {
    font-size: 1.5rem;
}

.explanation {
    color: var(--secondary-gray);
    line-height: 1.5;
}

/* Results Styles */
.results-card {
    text-align: center;
    padding: 3rem 2rem;
}

.results-header h2 {
    margin-bottom: 2rem;
    color: var(--primary-navy);
}

.score-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-orange), var(--success-green));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clean-white);
    font-size: 2rem;
    font-weight: 700;
}

.score-details p {
    margin-bottom: 0.5rem;
}

.score-message {
    font-weight: 600;
    color: var(--primary-navy);
}

.results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Study Calendar */
.study-calendar {
    max-width: 1000px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.calendar-header {
    text-align: center;
    margin-bottom: 2rem;
}

.calendar-header h3 {
    color: var(--primary-navy);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border-gray);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.day-header {
    background: var(--primary-navy);
    color: var(--clean-white);
    padding: 1rem;
    text-align: center;
    font-weight: 600;
}

.calendar-day {
    background: var(--clean-white);
    padding: 1rem;
    min-height: 100px;
    cursor: pointer;
    transition: var(--transition-fast);
    position: relative;
    display: flex;
    flex-direction: column;
}

.calendar-day:hover {
    background: var(--light-gray);
}

.calendar-day.empty {
    background: #f5f5f5;
    cursor: default;
}

.calendar-day.completed {
    background: rgba(5, 150, 105, 0.1);
    border-left: 4px solid var(--success-green);
}

.calendar-day.scheduled {
    background: rgba(255, 107, 53, 0.1);
    border-left: 4px solid var(--accent-orange);
}

.calendar-day.today {
    background: var(--accent-orange);
    color: var(--clean-white);
}

.day-number {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.study-topic {
    font-size: 0.75rem;
    color: var(--secondary-gray);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.calendar-day.today .study-topic {
    color: rgba(255, 255, 255, 0.9);
}

/* Analytics Dashboard */
.analytics-container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.stats-overview {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--clean-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    text-align: center;
    transition: var(--transition-medium);
}

.stat-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-navy);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--secondary-gray);
    font-weight: 500;
}

.charts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.chart-container {
    background: var(--clean-white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-light);
    height: 400px;
}

/* Flashcard Styles */
.flashcard-container {
    max-width: 600px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.flashcard {
    width: 100%;
    height: 300px;
    perspective: 1000px;
    cursor: pointer;
    margin-bottom: 2rem;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform var(--transition-slow);
    transform-style: preserve-3d;
}

.flashcard.flipped .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    background: var(--clean-white);
}

.flashcard-back {
    transform: rotateY(180deg);
    background: var(--primary-navy);
    color: var(--clean-white);
}

.card-topic {
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--accent-orange);
}

.flashcard-back .card-topic {
    color: var(--accent-orange);
}

.card-content {
    font-size: 1.25rem;
    line-height: 1.4;
    margin-bottom: 1rem;
}

.card-hint {
    font-size: 0.875rem;
    opacity: 0.7;
}

.flashcard-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.card-counter {
    font-weight: 600;
    color: var(--secondary-gray);
}

.flashcard-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--clean-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-heavy);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-gray);
}

.modal-header h3 {
    margin: 0;
    color: var(--primary-navy);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--secondary-gray);
    padding: 0;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-body {
    padding: 1.5rem;
}

.study-topic-display {
    margin-bottom: 2rem;
}

.study-topic-display h4 {
    margin-bottom: 0.5rem;
    color: var(--primary-navy);
}

.topic-status {
    color: var(--secondary-gray);
    font-weight: 500;
}

.study-controls {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition-slow);
}

.animate-on-scroll.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* Notifications */
.notification {
    position: fixed;
    top: 100px;
    right: 1rem;
    background: var(--clean-white);
    color: var(--primary-navy);
    padding: 1rem 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-medium);
    transform: translateX(100%);
    transition: var(--transition-medium);
    z-index: 1500;
    border-left: 4px solid var(--info-blue);
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left-color: var(--success-green);
}

.notification.error {
    border-left-color: var(--alert-red);
}

.notification.warning {
    border-left-color: var(--accent-orange);
}

/* Footer */
.footer {
    background: var(--primary-navy);
    color: var(--clean-white);
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
}

.footer p {
    color: rgba(255, 255, 255, 0.8);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: var(--primary-navy);
        flex-direction: column;
        justify-content: flex-start;
        align-items: center;
        transition: var(--transition-medium);
        padding-top: 2rem;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 1rem 0;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-overview {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .quiz-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .flashcard-controls {
        flex-direction: column;
        gap: 1rem;
    }
    
    .study-controls {
        flex-direction: column;
    }
    
    .calendar-day {
        min-height: 80px;
        padding: 0.5rem;
    }
    
    .day-header {
        padding: 0.75rem 0.5rem;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .stats-overview {
        grid-template-columns: 1fr;
    }
    
    .quiz-card {
        padding: 1.5rem;
    }
    
    .option-btn {
        padding: 0.75rem 1rem;
        font-size: 0.875rem;
    }
    
    .calendar-grid {
        font-size: 0.75rem;
    }
    
    .calendar-day {
        min-height: 60px;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .hero,
    .footer,
    .quiz-controls,
    .flashcard-controls,
    .flashcard-actions {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .quiz-card,
    .feature-card {
        box-shadow: none !important;
        border: 1px solid #ccc !important;
        break-inside: avoid;
    }
}