/**
 * SA PLUK - Main Stylesheet
 * South African Financial Calculators & Education Platform
 * Modern Design inspired by DeLorean University style
 * 
 * @package SAPLUK
 * @version 2.0.0
 */

/* ============================================
   CSS Variables - Professional Green/Gold/Silver Theme
   ============================================ */
:root {
    /* Primary Green - Professional forest/emerald tones */
    --primary-color: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #E8F5E9;
    
    /* Accent Gold/Yellow - Warm, professional gold */
    --accent-color: #C9A227;
    --accent-dark: #A68B1F;
    --accent-light: #FFF8E1;
    
    /* Secondary - Silver/Gray tones */
    --secondary-color: #78909C;
    
    /* Status colors */
    --success-color: #388E3C;
    --danger-color: #C62828;
    --warning-color: #F9A825;
    --info-color: #0277BD;
    
    /* Neutral colors */
    --light-color: #FAFAFA;
    --dark-color: #212121;
    --white: #FFFFFF;
    --gray-100: #F5F5F5;
    --gray-200: #EEEEEE;
    --gray-300: #E0E0E0;
    --gray-400: #BDBDBD;
    --gray-500: #9E9E9E;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    
    --font-primary: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
    --font-heading: 'Segoe UI', var(--font-primary);
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-card: 0 1px 4px rgba(0, 0, 0, 0.06);
    
    --border-radius: 4px;
    --border-radius-lg: 6px;
    --border-radius-xl: 10px;
    
    --transition-base: all 0.2s ease-in-out;
    
    --header-height: 64px;
}

/* ============================================
   Base Styles
   ============================================ */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
    min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.3;
    color: var(--dark-color);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition-base);
}

a:hover {
    color: var(--primary-dark);
}

/* Page wrapper for light gray background */
.page-wrapper {
    background-color: var(--light-color);
    min-height: calc(100vh - var(--header-height));
}

/* ============================================
   Skip Link (Accessibility)
   ============================================ */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--primary-color);
    color: #fff;
    padding: 0.5rem 1rem;
    z-index: 9999;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
    color: #fff;
}

/* ============================================
   Header & Navigation
   ============================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: var(--white);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    height: var(--header-height);
}

.navbar {
    padding: 0;
    height: 100%;
}

.navbar-brand {
    font-weight: 600;
    display: flex;
    align-items: center;
    height: 100%;
    padding: 0;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-name {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

.brand-tagline {
    font-size: 0.65rem;
    color: var(--gray-500);
    font-weight: 400;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.9rem;
    padding: 0.5rem 1rem !important;
    color: var(--gray-700);
    border-radius: 0;
    transition: var(--transition-base);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    height: var(--header-height);
}

.nav-link i {
    font-size: 0.85rem;
}

.nav-link:hover,
.nav-link.active {
    background-color: transparent;
    color: var(--primary-color);
}

.navbar-nav .nav-link.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.dropdown-menu {
    border: none;
    box-shadow: var(--shadow-lg);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem 0;
}

.dropdown-menu-lg {
    min-width: 280px;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.dropdown-item:hover {
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.dropdown-header {
    font-weight: 600;
    color: var(--gray-500);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.5rem 1rem;
}

/* Header CTA Button */
.btn-header-cta {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
    color: var(--white);
    border-radius: 4px;
    padding: 0.5rem 1.25rem;
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-header-cta:hover {
    background: linear-gradient(135deg, var(--accent-dark) 0%, #8B7518 100%);
    color: var(--white);
    transform: translateY(-1px);
}

/* ============================================
   Hero Section
   ============================================ */
.hero-section,
.page-header {
    position: relative;
    overflow: hidden;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 3rem 0;
    color: var(--white);
}

.hero-section h1 {
    color: var(--white);
    font-weight: 300;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

/* Hero Search Box */
.hero-search {
    max-width: 600px;
    margin: 0 auto;
}

.hero-search .form-control {
    border: none;
    border-radius: 25px;
    padding: 0.875rem 1.5rem 0.875rem 3rem;
    font-size: 1rem;
    box-shadow: var(--shadow);
    background: var(--white);
}

.hero-search .form-control:focus {
    box-shadow: var(--shadow-lg);
    outline: none;
}

.hero-search .search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    font-size: 1rem;
}

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

/* Page Header (for inner pages) */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    padding: 2rem 0;
    color: var(--white);
}

.page-header h1 {
    color: var(--white);
    font-weight: 500;
    font-size: 1.5rem;
    margin-bottom: 0.25rem;
}

.page-header .lead {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
}

/* ============================================
   Cards
   ============================================ */
.card {
    border: none;
    border-radius: var(--border-radius-lg);
    background: var(--white);
    box-shadow: var(--shadow-card);
    transition: var(--transition-base);
}

.card-header {
    border-bottom: 1px solid var(--gray-200);
    font-weight: 600;
    background: var(--white);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

/* Service/Calculator Cards - Grid Style like reference */
.service-card {
    background: var(--white);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-card);
    transition: var(--transition-base);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    height: 100%;
}

.service-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.service-card .service-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
    border-radius: var(--border-radius-lg);
    color: var(--white);
    font-size: 1.1rem;
}

.service-card .service-content h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.35rem;
    color: var(--dark-color);
}

.service-card .service-content p {
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 0;
    line-height: 1.4;
}

.service-card a {
    text-decoration: none;
    color: inherit;
}

.calculator-card {
    border: none;
    background: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-card);
    transition: var(--transition-base);
}

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

.calculator-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
    border-radius: var(--border-radius-lg);
    color: var(--white);
    font-size: 1.1rem;
}

.hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

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

/* Card Grid Layout */
.card-grid {
    display: grid !important;
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 1.25rem !important;
}

@media (max-width: 1199px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr) !important;
    }
}

@media (max-width: 991px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }
}

@media (max-width: 575px) {
    .card-grid {
        grid-template-columns: 1fr !important;
    }
}

/* Ensure grid items don't overflow */
.card-grid > a,
.card-grid > div {
    min-width: 0;
}

/* ============================================
   Calculator Forms
   ============================================ */
.form-label {
    font-weight: 500;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    color: var(--gray-700);
}

.form-control,
.form-select {
    border-radius: var(--border-radius);
    padding: 0.625rem 0.875rem;
    border: 1px solid var(--gray-300);
    transition: var(--transition-base);
    font-size: 0.95rem;
}

.form-control:focus,
.form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.15);
}

.input-group-text {
    background-color: var(--gray-100);
    border-color: var(--gray-300);
    font-weight: 500;
    color: var(--gray-600);
}

.btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.form-text {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* ============================================
   Results Section
   ============================================ */
.result-box {
    padding: 1rem;
    border-radius: var(--border-radius-lg);
    text-align: center;
}

.result-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.result-value {
    font-weight: 700;
}

/* ============================================
   Tables
   ============================================ */
.table {
    margin-bottom: 0;
}

.table th {
    font-weight: 600;
    background-color: var(--light-color);
}

.table-responsive {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    border-radius: var(--border-radius);
    transition: var(--transition-base);
}

.btn-lg {
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    border: none;
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #145214 100%);
    transform: translateY(-1px);
}

/* Gold/Accent Button */
.btn-accent {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
    border: none;
    color: var(--white);
}

.btn-accent:hover {
    background: linear-gradient(135deg, var(--accent-dark) 0%, #8B7518 100%);
    color: var(--white);
    transform: translateY(-1px);
}

/* ============================================
   Breadcrumbs
   ============================================ */
.breadcrumb-wrapper {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.breadcrumb {
    margin-bottom: 0;
    padding: 0;
    background: transparent;
    font-size: 0.875rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    content: "›";
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    margin-top: auto;
    background: linear-gradient(180deg, #1a1a1a 0%, var(--dark-color) 100%);
    color: var(--gray-400);
}

.site-footer h5,
.site-footer h6 {
    color: var(--white);
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--gray-400);
    transition: var(--transition-base);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 5px;
}

.footer-contact a {
    color: var(--gray-400);
}

.footer-contact a:hover {
    color: var(--white);
}

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    transition: var(--transition-base);
}

.social-links a:hover {
    background: var(--accent-color);
    transform: translateY(-2px);
}

.disclaimer-banner {
    background-color: rgba(0, 0, 0, 0.2) !important;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-top: 1.5rem;
}

/* ============================================
   Back to Top Button
   ============================================ */
.btn-back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    box-shadow: var(--shadow);
}

.btn-back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* ============================================
   Blog Styles
   ============================================ */
.blog-content {
    font-size: 1.05rem;
    line-height: 1.8;
}

.blog-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.blog-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.blog-content p {
    margin-bottom: 1.25rem;
}

.blog-content ul,
.blog-content ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}

.blog-content li {
    margin-bottom: 0.5rem;
}

.blog-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    margin: 1rem 0;
}

.blog-content blockquote {
    border-left: 4px solid var(--primary-color);
    padding-left: 1rem;
    margin: 1.5rem 0;
    font-style: italic;
    color: var(--secondary-color);
}

.blog-content code {
    background-color: var(--light-color);
    padding: 0.2rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
}

.blog-content pre {
    background-color: var(--dark-color);
    color: #fff;
    padding: 1rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
}

.blog-content pre code {
    background: none;
    padding: 0;
    color: inherit;
}

/* ============================================
   SEO Content Styles
   ============================================ */
.seo-content {
    font-size: 1rem;
    line-height: 1.7;
}

.seo-content h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.seo-content h3 {
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.seo-content h4 {
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
}

.seo-content ul,
.seo-content ol {
    margin-bottom: 1rem;
}

.seo-content li {
    margin-bottom: 0.35rem;
}

/* ============================================
   Legal Pages
   ============================================ */
.legal-content h2 {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.legal-content h3 {
    margin-top: 1.5rem;
}

.legal-content ul {
    margin-bottom: 1rem;
}

.legal-content address {
    background-color: var(--light-color);
    padding: 1rem;
    border-radius: var(--border-radius);
}

/* ============================================
   Stats Card
   ============================================ */
.stats-card {
    background: linear-gradient(135deg, var(--primary-color) 0%, #0a4da8 100%);
}

.stat-number {
    font-weight: 700;
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.9;
}

/* ============================================
   Feature Items
   ============================================ */
.feature-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   Popular Tool Cards
   ============================================ */
.popular-tool-card {
    transition: var(--transition-base);
}

.popular-tool-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.tool-icon {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ============================================
   Accordion
   ============================================ */
.accordion-button {
    font-weight: 500;
}

.accordion-button:not(.collapsed) {
    background-color: rgba(13, 110, 253, 0.1);
    color: var(--primary-color);
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

/* ============================================
   Alerts
   ============================================ */
.alert {
    border-radius: var(--border-radius-lg);
}

.alert-heading {
    font-weight: 600;
}

/* ============================================
   Progress Bar
   ============================================ */
.progress {
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* ============================================
   Charts
   ============================================ */
canvas {
    max-width: 100%;
}

/* ============================================
   Utilities
   ============================================ */
.sticky-lg-top {
    position: sticky;
    top: 20px;
}

.bg-primary-subtle {
    background-color: rgba(13, 110, 253, 0.1) !important;
}

.bg-success-subtle {
    background-color: rgba(25, 135, 84, 0.1) !important;
}

.bg-danger-subtle {
    background-color: rgba(220, 53, 69, 0.1) !important;
}

.bg-warning-subtle {
    background-color: rgba(255, 193, 7, 0.15) !important;
}

.bg-info-subtle {
    background-color: rgba(13, 202, 240, 0.1) !important;
}

.rounded-4 {
    border-radius: var(--border-radius-xl) !important;
}

/* ============================================
   Responsive Adjustments
   ============================================ */
@media (max-width: 991.98px) {
    .sticky-lg-top {
        position: relative;
        top: 0;
    }
    
    .navbar-collapse {
        padding: 1rem 0;
    }
    
    .nav-link {
        padding: 0.75rem 1rem !important;
    }
}

@media (max-width: 767.98px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .display-5 {
        font-size: 1.75rem;
    }
    
    .display-6 {
        font-size: 1.5rem;
    }
    
    .result-box {
        padding: 0.75rem;
    }
    
    .result-value {
        font-size: 1rem;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .site-header,
    .site-footer,
    .btn-back-to-top,
    .breadcrumb-wrapper,
    form,
    .card-header,
    .social-links {
        display: none !important;
    }
    
    .card {
        border: 1px solid #ddd;
        box-shadow: none;
    }
    
    a {
        text-decoration: underline;
    }
    
    .container {
        max-width: 100%;
    }
}

/* ============================================
   Focus Styles (Accessibility)
   ============================================ */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ============================================
   High Contrast Mode
   ============================================ */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #0000ff;
        --secondary-color: #000;
    }
    
    .card {
        border-width: 2px;
    }
    
    .btn {
        border-width: 2px;
    }
}