/* Student Transport - Design System */
/* This file contains custom styles that complement Tailwind CSS */

/* ========================================
   CSS CUSTOM PROPERTIES
   ======================================== */
:root {
    /* Primary Colors - School Bus Yellow */
    --color-primary: #FFCC00;
    --color-primary-dark: #FFC107;
    --color-primary-light: #FFE066;
    
    /* Secondary Colors - Trust Blue */
    --color-secondary: #2196F3;
    --color-secondary-dark: #1976D2;
    --color-secondary-light: #64B5F6;
    
    /* Text Colors */
    --color-text-primary: #333333;
    --color-text-secondary: #666666;
    --color-text-light: #999999;
    
    /* Background Colors */
    --color-bg-white: #FFFFFF;
    --color-bg-gray: #F5F5F5;
    --color-bg-light: #F8F8F8;
    --color-footer: #111111;
    
    /* Border Colors */
    --color-border: #E0E0E0;
    --color-border-input: #CCCCCC;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --section-padding: 60px;
    --section-padding-lg: 80px;
    
    /* Container */
    --container-max: 1140px;
    --container-padding: 20px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
}

/* ========================================
   BASE STYLES
   ======================================== */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', Arial, sans-serif;
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   SKIP LINK (Accessibility)
   ======================================== */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #000;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 100;
    font-weight: 500;
}

.skip-link:focus {
    top: 0;
}

/* ========================================
   TYPOGRAPHY UTILITIES
   ======================================== */
.heading-1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

.heading-2 {
    font-size: 28px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--color-text-primary);
}

.heading-3 {
    font-size: 20px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--color-text-primary);
}

.body-text {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.text-small {
    font-size: 14px;
    font-weight: 400;
    line-height: 1.5;
}

.text-large {
    font-size: 18px;
    font-weight: 400;
    line-height: 1.6;
}

/* Responsive Typography */
@media (min-width: 768px) {
    .heading-1 {
        font-size: 42px;
    }
    
    .heading-2 {
        font-size: 32px;
    }
}

@media (min-width: 1024px) {
    .heading-1 {
        font-size: 48px;
    }
}

/* ========================================
   BUTTON COMPONENTS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Primary Button - Yellow */
.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
}

/* Secondary Button - Blue */
.btn-secondary {
    background-color: var(--color-secondary);
    color: white;
    padding: 10px 20px;
    font-weight: 500;
    border-radius: 4px;
}

.btn-secondary:hover {
    background-color: var(--color-secondary-dark);
}

/* Outline Button */
.btn-outline {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-border);
}

.btn-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

/* Small Button */
.btn-sm {
    padding: 8px 16px;
    font-size: 14px;
}

/* Large Button */
.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section-padding {
    padding-top: var(--section-padding);
    padding-bottom: var(--section-padding);
}

.section-padding-lg {
    padding-top: var(--section-padding-lg);
    padding-bottom: var(--section-padding-lg);
}

.section-gray {
    background-color: var(--color-bg-gray);
}

.section-light {
    background-color: var(--color-bg-light);
}

/* ========================================
   HERO PATTERN
   ======================================== */
.hero {
    position: relative;
    min-height: 400px;
    display: flex;
    align-items: center;
    background-size: cover;
    background-position: center;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.hero-title {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 18px;
    margin-bottom: 24px;
    opacity: 0.95;
}

@media (min-width: 768px) {
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 56px;
    }
}

/* ========================================
   CARD PATTERN
   ======================================== */
.card {
    background-color: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    padding: 24px;
    transition: box-shadow var(--transition-base);
}

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

.card-title {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--color-text-primary);
}

.card-text {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ========================================
   NAVIGATION LINK
   ======================================== */
.nav-link {
    color: var(--color-text-primary);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
    padding: 8px 0;
}

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

.nav-link-active {
    color: var(--color-primary);
    font-weight: 600;
}

/* ========================================
   FOOTER LINK
   ======================================== */
.footer-link {
    color: #9CA3AF;
    text-decoration: none;
    font-size: 14px;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-primary);
}

/* ========================================
   FORM ELEMENTS
   ======================================== */
.form-input {
    width: 100%;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid var(--color-border-input);
    border-radius: 6px;
    background-color: white;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.form-input::placeholder {
    color: var(--color-text-light);
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--color-text-primary);
}

.form-group {
    margin-bottom: 16px;
}

/* Honeypot field - visually hidden but in DOM for bots */
.hp-field {
    position: absolute !important;
    left: -9999px !important;
    width: 1px !important;
    height: 1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
}

/* ========================================
    UTILITY CLASSES
    ======================================== */
.text-center {
    text-align: center;
}

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

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

.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-secondary);
}

.bg-primary {
    background-color: var(--color-primary);
}

.bg-secondary {
    background-color: var(--color-secondary);
}

.bg-footer {
    background-color: var(--color-footer);
}

/* ========================================
   FOCUS STYLES (Accessibility)
   ======================================== */
:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 2px;
}

/* Remove focus outline for mouse users */
:focus:not(:focus-visible) {
    outline: none;
}

/* ========================================
   IMAGE UTILITIES
   ======================================== */
.img-responsive {
    max-width: 100%;
    height: auto;
}

.img-cover {
    object-fit: cover;
    width: 100%;
    height: 100%;
}

/* ========================================
   ICON BOX (for feature cards)
   ======================================== */
.icon-box {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--color-primary-light);
    border-radius: 8px;
    margin-bottom: 16px;
}

.icon-box svg {
    width: 24px;
    height: 24px;
    color: var(--color-text-primary);
}

/* ========================================
   SPLIT LAYOUT (two-column)
   ======================================== */
.split-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: center;
}

@media (min-width: 768px) {
    .split-layout {
        grid-template-columns: 1fr 1fr;
    }
}

/* ========================================
   GRID LAYOUTS
   ======================================== */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

.grid-4 {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (min-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ========================================
   PRINT STYLES
   ======================================== */
@media print {
    .no-print {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    a {
        text-decoration: underline;
    }
}

/* ========================================
   FAQ ACCORDION
   ======================================== */
.faq-section {
    max-width: 800px;
    margin: 0 auto;
}

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

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    background: none;
    border: none;
    font-size: 16px;
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    text-align: left;
}

.faq-question:hover {
    color: var(--color-secondary);
}

.faq-question:focus-visible {
    outline: 2px solid var(--color-secondary);
    outline-offset: 4px;
}

.faq-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-left: 16px;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 0 20px 0;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.faq-answer p {
    margin: 0;
}

.faq-answer[hidden] {
    display: none;
}