/* ============================================
   ABC Learning Centre - Custom Stylesheet
   Light Yellow / Dark Yellow Modern Theme
   ============================================ */

/* ============================================
   1. CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
    /* === PRIMARY COLORS - YELLOW THEME === */
    
    /* Primary Yellow Scale */
    --color-primary: #ffca5e;
    --color-primary-50: #fff9eb;
    --color-primary-100: #ffefc6;
    --color-primary-200: #ffdc88;
    --color-primary-300: #ffca5e;
    --color-primary-400: #f5b83a;
    --color-primary-500: #e6a020;
    --color-primary-600: #cc8a18;
    --color-primary-700: #a66d14;
    --color-primary-800: #865812;
    --color-primary-900: #6e4810;
    --color-primary-950: #3d2508;
    
    /* Primary Content (text on primary backgrounds) */
    --color-primary-content: #1f1f1f;
    
    /* Secondary Colors */
    --color-secondary: #dfcf95;
    --color-secondary-50: #faf8f0;
    --color-secondary-100: #f3eed8;
    --color-secondary-200: #e8e0b8;
    --color-secondary-300: #dfcf95;
    --color-secondary-400: #d4be72;
    --color-secondary-500: #c4a94f;
    --color-secondary-600: #a88f3d;
    --color-secondary-700: #8a7333;
    --color-secondary-800: #705d2d;
    --color-secondary-900: #5c4c28;
    --color-secondary-950: #332914;
    
    /* Secondary Content */
    --color-secondary-content: #1f1f1f;
    
    /* Accent Color */
    --color-accent: #18f293;
    --color-accent-content: #ffffff;
    
    /* === BASE / NEUTRAL COLORS === */
    
    --color-base-50: #ffffff;
    --color-base-100: #f3f4f6;
    --color-base-200: #e5e7eb;
    --color-base-300: #d1d5db;
    --color-base-content: #101828;
    
    /* Text Colors */
    --color-heading: #101828;
    --color-body: #101828;
    --color-subtle: #4a5565;
    --color-light: #99a1af;
    --color-link: #2563eb;
    
    /* Border & Background */
    --color-border: #d1d5dc;
    --color-background: #ffffff;
    --color-neutral: #f3f4f6;
    --color-neutral-content: #000000;
    
    /* === SEMANTIC COLORS === */
    
    --color-success: #10b981;
    --color-success-content: #ffffff;
    --color-info: #2563eb;
    --color-info-content: #ffffff;
    --color-warning: #f59e0b;
    --color-warning-content: #ffffff;
    --color-danger: #ef4444;
    --color-danger-content: #ffffff;
    
    /* === LEGACY MAPPINGS (for backward compatibility) === */
    
    --color-primary-yellow: #ffca5e;
    --color-primary-yellow-dark: #cc8a18;
    --color-primary-yellow-light: #ffdc88;
    --color-soft-yellow: #fff9eb;
    --color-soft-yellow-mid: #ffefc6;
    --color-warm-coral: #18f293;
    --color-warm-coral-dark: #14c276;
    --color-accent-orange: #f5b83a;
    --color-accent-amber: #e6a020;
    --color-deep-charcoal: #101828;
    --color-dark-gray: #1f2937;
    --color-medium-gray: #4a5565;
    --color-light-gray: #f3f4f6;
    --color-border-gray: #d1d5dc;
    --color-white: #ffffff;
    --color-success-green: #10b981;
    --color-info-blue: #2563eb;
    --color-error-red: #ef4444;
    
    /* === TYPOGRAPHY === */
    
    --font-family: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-brand: 'Poppins', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-primary: 'Poppins', 'Segoe UI', 'Helvetica Neue', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-accent: 'Georgia', serif;
    
    /* Font Sizes - Desktop */
    --font-size-h1: 3rem;
    --font-size-h2: 2.25rem;
    --font-size-h3: 1.75rem;
    --font-size-h4: 1.375rem;
    --font-size-body: 1rem;
    --font-size-small: 0.875rem;
    --font-size-tiny: 0.75rem;
    
    /* Font Sizes - Mobile */
    --font-size-h1-mobile: 2rem;
    --font-size-h2-mobile: 1.75rem;
    --font-size-h3-mobile: 1.5rem;
    --font-size-h4-mobile: 1.25rem;
    
    /* Line Heights */
    --line-height-tight: 1.2;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.6;
    
    /* === SPACING === */
    
    --spacing-base: 0.25rem;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* === LAYOUT === */
    
    --container-max-width: 75rem;
    --container-text-width: 50rem;
    --container-narrow-width: 56rem;
    --container-padding-mobile: 1.5rem;
    --container-padding-desktop: 3rem;
    
    /* === BORDER RADIUS === */
    
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    --radius-btn: 0.375rem;
    --radius-input: 0.375rem;
    --radius-box: 0.5rem;
    
    /* === SHADOWS === */
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-primary: 0 4px 14px 0 rgba(255, 202, 94, 0.4);
    --shadow-primary-lg: 0 8px 25px 0 rgba(255, 202, 94, 0.45);
    
    /* === TRANSITIONS === */
    
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 200ms ease-in-out;
    --transition-slow: 300ms ease-in-out;
}

/* Mobile font size overrides */
@media (max-width: 768px) {
    :root {
        --font-size-h1: var(--font-size-h1-mobile);
        --font-size-h2: var(--font-size-h2-mobile);
        --font-size-h3: var(--font-size-h3-mobile);
        --font-size-h4: var(--font-size-h4-mobile);
    }
}

/* ============================================
   2. Base Styles
   ============================================ */

body {
    font-family: var(--font-family);
    color: var(--color-body);
    background-color: var(--color-background);
}

/* ============================================
   3. Brand Typography
   ============================================ */

.brand-name {
    font-family: var(--font-brand);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.brand-tagline {
    font-family: var(--font-brand);
    font-weight: 400;
    letter-spacing: 0.01em;
}

.brand-text {
    font-family: var(--font-brand);
}

/* ============================================
   4. Button Components
   ============================================ */

.btn-primary {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    background-color: var(--color-primary);
    color: var(--color-primary-content);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    background-color: var(--color-primary-500);
    color: var(--color-white);
    box-shadow: var(--shadow-primary-lg);
    transform: translateY(-2px);
}

.btn-secondary {
    display: inline-block;
    padding: 0.8125rem 1.6875rem;
    background-color: transparent;
    color: var(--color-primary-600);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-btn);
    border: 2px solid var(--color-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-dark {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    background-color: var(--color-heading);
    color: var(--color-white);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-dark:hover {
    background-color: var(--color-dark-gray);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-white {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    background-color: var(--color-white);
    color: var(--color-primary-600);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.btn-white:hover {
    background-color: var(--color-primary-50);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.btn-accent {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    background-color: var(--color-accent);
    color: var(--color-accent-content);
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--radius-btn);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 14px 0 rgba(24, 242, 147, 0.3);
}

.btn-accent:hover {
    background-color: #14c276;
    box-shadow: 0 8px 25px 0 rgba(24, 242, 147, 0.4);
    transform: translateY(-2px);
}

.btn-large {
    padding: 1.125rem 2.25rem;
    font-size: 1.125rem;
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-small);
}

.btn-full-width {
    width: 100%;
    display: block;
}

/* ============================================
   5. Card Components
   ============================================ */

.card {
    background-color: var(--color-white);
    border-radius: var(--radius-box);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.card-no-hover {
    background-color: var(--color-white);
    border-radius: var(--radius-box);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.card-bordered {
    background-color: var(--color-white);
    border-radius: var(--radius-box);
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    transition: all var(--transition-normal);
}

.card-bordered:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.card-yellow {
    background-color: var(--color-primary-50);
    border-radius: var(--radius-box);
    padding: 1.5rem;
    border: 1px solid var(--color-primary-100);
    transition: all var(--transition-normal);
}

.card-yellow:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-primary);
}

.card-highlight {
    background-color: var(--color-white);
    border-radius: var(--radius-box);
    padding: 1.5rem;
    border-left: 4px solid var(--color-primary);
    box-shadow: var(--shadow-md);
}

/* ============================================
   6. Section Layouts
   ============================================ */

.section-container {
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
    padding: 4rem 1.5rem;
}

@media (min-width: 1024px) {
    .section-container {
        padding: 5rem 3rem;
    }
}

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

.section-bg-light {
    background-color: var(--color-base-100);
}

.section-bg-yellow {
    background-color: var(--color-primary-50);
}

.section-bg-yellow-mid {
    background-color: var(--color-primary-100);
}

.section-bg-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-500) 100%);
    color: var(--color-primary-content);
}

.section-bg-dark {
    background: linear-gradient(135deg, var(--color-heading) 0%, var(--color-dark-gray) 100%);
    color: var(--color-white);
}

.section-bg-secondary {
    background-color: var(--color-secondary-50);
}

/* ============================================
   7. Typography Helpers
   ============================================ */

.heading-primary {
    font-family: var(--font-family);
    font-size: var(--font-size-h1);
    font-weight: 700;
    line-height: var(--line-height-tight);
    color: var(--color-heading);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.heading-secondary {
    font-family: var(--font-family);
    font-size: var(--font-size-h2);
    font-weight: 600;
    line-height: var(--line-height-tight);
    color: var(--color-heading);
    margin-bottom: 1rem;
    letter-spacing: -0.01em;
}

.heading-tertiary {
    font-family: var(--font-family);
    font-size: var(--font-size-h3);
    font-weight: 600;
    line-height: 1.4;
    color: var(--color-heading);
    margin-bottom: 1rem;
}

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

.text-yellow-dark {
    color: var(--color-primary-600);
}

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

.text-body {
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--color-body);
}

.text-secondary {
    font-size: var(--font-size-body);
    line-height: var(--line-height-relaxed);
    color: var(--color-subtle);
}

.text-small {
    font-size: var(--font-size-small);
    line-height: var(--line-height-normal);
}

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

.text-on-dark {
    color: var(--color-white);
}

/* ============================================
   8. Form Elements
   ============================================ */

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    color: var(--color-body);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-input);
    transition: all var(--transition-normal);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 202, 94, 0.2);
}

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

.form-label {
    display: block;
    font-family: var(--font-family);
    font-size: var(--font-size-small);
    font-weight: 600;
    color: var(--color-heading);
    margin-bottom: 0.5rem;
}

.form-label-required::after {
    content: " *";
    color: var(--color-danger);
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    color: var(--color-body);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-input);
    transition: all var(--transition-normal);
    cursor: pointer;
    outline: none;
}

.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 202, 94, 0.2);
}

.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    font-family: var(--font-family);
    font-size: var(--font-size-body);
    color: var(--color-body);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-input);
    transition: all var(--transition-normal);
    resize: vertical;
    min-height: 120px;
    outline: none;
}

.form-textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(255, 202, 94, 0.2);
}

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

/* ============================================
   9. Alert/Notice Boxes
   ============================================ */

.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin-bottom: 1.5rem;
}

.alert-info {
    background-color: #eff6ff;
    border-left: 4px solid var(--color-info);
    color: var(--color-body);
}

.alert-success {
    background-color: #f0fdf4;
    border-left: 4px solid var(--color-success);
    color: var(--color-body);
}

.alert-warning {
    background-color: var(--color-primary-50);
    border-left: 4px solid var(--color-primary);
    color: var(--color-body);
}

.alert-error {
    background-color: #fef2f2;
    border-left: 4px solid var(--color-danger);
    color: var(--color-body);
}

/* ============================================
   10. Badge Components
   ============================================ */

.badge {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    font-family: var(--font-family);
    font-size: var(--font-size-tiny);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

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

.badge-success {
    background-color: var(--color-success);
    color: var(--color-success-content);
}

.badge-accent {
    background-color: var(--color-accent);
    color: var(--color-accent-content);
}

.badge-light {
    background-color: var(--color-primary-50);
    color: var(--color-primary-600);
}

.badge-dark {
    background-color: var(--color-heading);
    color: var(--color-white);
}

/* ============================================
   11. Step/Process Indicators
   ============================================ */

.step-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    background-color: var(--color-primary);
    color: var(--color-primary-content);
    font-family: var(--font-family);
    font-weight: 700;
    font-size: var(--font-size-small);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.step-number-large {
    width: 3rem;
    height: 3rem;
    font-size: var(--font-size-body);
}

/* ============================================
   12. Icon Containers
   ============================================ */

.icon-container {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-lg);
    background-color: var(--color-primary-50);
    color: var(--color-primary-600);
}

.icon-container-large {
    width: 4rem;
    height: 4rem;
}

.icon-container-primary {
    background-color: var(--color-primary);
    color: var(--color-primary-content);
}

.icon-container-dark {
    background-color: var(--color-heading);
    color: var(--color-white);
}

.icon-container-white {
    background-color: var(--color-white);
    color: var(--color-primary-600);
}

.icon-container-accent {
    background-color: rgba(24, 242, 147, 0.15);
    color: var(--color-accent);
}

/* ============================================
   13. Trust Elements
   ============================================ */

.trust-badge {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-500) 100%);
}

/* ============================================
   14. Image Halos
   ============================================ */

img {
    box-shadow: 0 0 25px 5px var(--color-secondary) !important;
}

/* Exclude header and footer images from halo */
.site-header img, 
#mobile-menu img,
.site-footer img {
    box-shadow: none !important;
}