/**
 * InGoal Magazine Design System
 * 
 * Shared CSS variables, typography, and common components
 * Used by: Homepage, Category Archives, Coach Directory, and more
 * 
 * @package InGoal
 * @since January 2026
 */

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

:root {
    /* Colors - Primary Palette */
    --ig-navy: #0A1628;
    --ig-navy-medium: #1a3a52;
    --ig-navy-light: #2a4a62;
    --ig-ice-blue: #E8F4F8;
    --ig-ice-blue-medium: #D4EBF3;
    --ig-ice-blue-dark: #B8DDE8;
    --ig-accent-blue: #2B7A8F;
    --ig-accent-blue-hover: #236673;
    --ig-promo-yellow: #FFD93D;
    --ig-promo-yellow-hover: #F5CC00;
    
    /* Colors - Text */
    --ig-text-primary: #0A0A0A;
    --ig-text-secondary: #4A4A4A;
    --ig-text-tertiary: #6A6A6A;
    --ig-text-inverse: #FFFFFF;
    --ig-text-link: var(--ig-accent-blue);
    
    /* Colors - UI */
    --ig-border-color: #E0E0E0;
    --ig-border-light: #F0F0F0;
    --ig-bg-white: #FFFFFF;
    --ig-bg-light: #FAFAFA;
    
    /* Typography - Font Families */
    --ig-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --ig-font-body: 'Merriweather', Georgia, serif;
    --ig-font-ui: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Typography - Font Sizes */
    --ig-text-xs: 11px;
    --ig-text-sm: 13px;
    --ig-text-base: 15px;
    --ig-text-md: 17px;
    --ig-text-lg: 20px;
    --ig-text-xl: 24px;
    --ig-text-2xl: 28px;
    --ig-text-3xl: 32px;
    --ig-text-4xl: 42px;
    --ig-text-5xl: 52px;
    --ig-text-6xl: 56px;
    
    /* Typography - Line Heights */
    --ig-leading-tight: 1.15;
    --ig-leading-snug: 1.25;
    --ig-leading-normal: 1.5;
    --ig-leading-relaxed: 1.65;
    
    /* Typography - Letter Spacing */
    --ig-tracking-tight: -0.02em;
    --ig-tracking-normal: 0;
    --ig-tracking-wide: 0.02em;
    --ig-tracking-wider: 0.5px;
    --ig-tracking-widest: 1px;
    
    /* Spacing */
    --ig-space-xs: 4px;
    --ig-space-sm: 8px;
    --ig-space-md: 16px;
    --ig-space-lg: 24px;
    --ig-space-xl: 32px;
    --ig-space-2xl: 40px;
    --ig-space-3xl: 50px;
    --ig-space-4xl: 60px;
    --ig-space-5xl: 80px;
    --ig-space-6xl: 100px;
    
    /* Layout */
    --ig-container-max: 1400px;
    --ig-container-padding: 50px;
    --ig-sidebar-width: 380px;
    --ig-gap-main: 70px;
    
    /* Border Radius */
    --ig-radius-sm: 4px;
    --ig-radius-md: 8px;
    --ig-radius-lg: 12px;
    --ig-radius-full: 50%;
    
    /* Shadows */
    --ig-shadow-sm: 0 4px 12px rgba(10, 22, 40, 0.08);
    --ig-shadow-md: 0 8px 24px rgba(10, 22, 40, 0.1);
    --ig-shadow-lg: 0 16px 40px rgba(10, 22, 40, 0.15);
    --ig-shadow-xl: 0 20px 60px rgba(10, 22, 40, 0.12);
    --ig-shadow-header: 0 4px 20px rgba(10, 22, 40, 0.08);
    
    /* Transitions */
    --ig-transition-fast: 0.15s ease;
    --ig-transition-base: 0.2s ease;
    --ig-transition-slow: 0.3s ease;
    --ig-transition-image: 0.6s ease;
    
    /* Z-Index Scale */
    --ig-z-base: 1;
    --ig-z-dropdown: 50;
    --ig-z-sticky: 90;
    --ig-z-header: 100;
    --ig-z-modal: 200;
}

/* =========================================
   Base Typography Classes
   ========================================= */

.ig-heading {
    font-family: var(--ig-font-heading);
    font-weight: 700;
    line-height: var(--ig-leading-tight);
    letter-spacing: var(--ig-tracking-tight);
    color: var(--ig-navy);
}

.ig-heading--xl {
    font-size: var(--ig-text-5xl);
    font-weight: 800;
}

.ig-heading--lg {
    font-size: var(--ig-text-4xl);
    font-weight: 800;
}

.ig-heading--md {
    font-size: var(--ig-text-2xl);
}

.ig-heading--sm {
    font-size: var(--ig-text-xl);
}

.ig-body {
    font-family: var(--ig-font-body);
    font-size: 18px;
    line-height: var(--ig-leading-relaxed);
    color: var(--ig-text-primary);
}

.ig-body--lg {
    font-size: var(--ig-text-lg);
    line-height: 1.6;
}

.ig-body--sm {
    font-size: var(--ig-text-base);
}

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

.ig-label {
    font-family: var(--ig-font-ui);
    font-size: var(--ig-text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--ig-accent-blue);
}

/* =========================================
   Container & Layout
   ========================================= */

.ig-container {
    max-width: var(--ig-container-max);
    margin: 0 auto;
    padding: 0 var(--ig-container-padding);
}

.ig-section {
    margin: var(--ig-space-5xl) auto;
}

/* Two-column layout */
.ig-layout-two-col {
    display: grid;
    grid-template-columns: 1fr var(--ig-sidebar-width);
    gap: var(--ig-gap-main);
}

.ig-layout-two-col--full {
    grid-template-columns: 1fr;
}

/* =========================================
   Buttons
   ========================================= */

.ig-btn {
    display: inline-block;
    font-family: var(--ig-font-ui);
    font-size: var(--ig-text-sm);
    font-weight: 700;
    text-decoration: none;
    border-radius: var(--ig-radius-sm);
    transition: all var(--ig-transition-base);
    cursor: pointer;
    border: none;
    letter-spacing: 0.3px;
}

.ig-btn--primary {
    background: var(--ig-navy);
    color: var(--ig-text-inverse);
    padding: 12px 28px;
}

.ig-btn--primary:hover {
    background: var(--ig-accent-blue);
    color: var(--ig-text-inverse);
}

.ig-btn--secondary {
    background: var(--ig-bg-white);
    color: var(--ig-navy);
    padding: 12px 28px;
}

.ig-btn--secondary:hover {
    background: var(--ig-ice-blue);
}

.ig-btn--lg {
    padding: 16px 36px;
    font-size: var(--ig-text-base);
}

/* =========================================
   Cards
   ========================================= */

/* Base card image with zoom effect */
.ig-card-image {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: var(--ig-radius-md);
    background: var(--ig-navy);
}

.ig-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--ig-transition-image);
}

.ig-card:hover .ig-card-image img,
.ig-card-link:hover .ig-card-image img {
    transform: scale(1.05);
}

/* Card shadow on hover */
.ig-card-image--shadow {
    box-shadow: var(--ig-shadow-md);
    transition: box-shadow var(--ig-transition-slow);
}

.ig-card:hover .ig-card-image--shadow,
.ig-card-link:hover .ig-card-image--shadow {
    box-shadow: var(--ig-shadow-lg);
}

/* Card lift on hover */
.ig-card--hover-lift {
    transition: transform var(--ig-transition-slow);
}

.ig-card--hover-lift:hover {
    transform: translateY(-6px);
}

/* =========================================
   Sidebar Components
   ========================================= */

.ig-sidebar {
    position: sticky;
    top: 160px;
    align-self: start;
}

.ig-sidebar-module {
    background: var(--ig-ice-blue);
    padding: var(--ig-space-xl);
    margin-bottom: var(--ig-space-xl);
}

.ig-sidebar-module h3,
.ig-sidebar-module__title {
    font-family: var(--ig-font-heading);
    font-size: var(--ig-text-lg);
    font-weight: 700;
    color: var(--ig-navy);
    margin: 0 0 var(--ig-space-lg) 0;
}

.ig-sidebar-module--dark {
    background: var(--ig-navy);
    color: var(--ig-text-inverse);
}

.ig-sidebar-module--dark h3,
.ig-sidebar-module--dark .ig-sidebar-module__title {
    color: var(--ig-text-inverse);
}

.ig-sidebar-module--dark p {
    color: rgba(255, 255, 255, 0.85);
}

/* Sidebar list */
.ig-sidebar-list {
    list-style: none !important;
    margin: 0;
    padding: 0;
}

.ig-sidebar-list li {
    list-style: none !important;
    padding: 14px 0;
    border-bottom: 1px solid rgba(10, 22, 40, 0.1);
}

.ig-sidebar-list li::before,
.ig-sidebar-list li::marker {
    display: none !important;
    content: none !important;
}

.ig-sidebar-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.ig-sidebar-list a {
    color: var(--ig-navy);
    text-decoration: none;
    font-size: var(--ig-text-base);
    line-height: 1.2;
    font-weight: 600;
    font-family: var(--ig-font-ui);
    transition: color var(--ig-transition-base);
    display: block;
}

.ig-sidebar-list a:hover {
    color: var(--ig-accent-blue);
}

.ig-sidebar-meta {
    font-size: var(--ig-text-sm);
    color: var(--ig-text-secondary);
    margin-top: 6px;
    font-family: var(--ig-font-ui);
}

/* =========================================
   Promo Bar (Sitewide)
   ========================================= */

.ig-promo-bar {
    background: var(--ig-promo-yellow);
    color: var(--ig-navy);
    text-align: center;
    padding: 16px 20px;
    font-family: var(--ig-font-ui);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    line-height: 1.3;
}

@media (max-width: 600px) {
    .ig-promo-bar {
        padding: 10px 16px;
        font-size: 13px;
        line-height: 1.35;
    }
}

.ig-promo-bar a {
    color: var(--ig-navy);
    text-decoration: underline;
    font-weight: 700;
}

.ig-promo-bar--animated a {
    animation: ig-subtle-pulse 3s ease-in-out infinite;
}

@keyframes ig-subtle-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

/* =========================================
   Section Headers
   ========================================= */

.ig-section-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: var(--ig-space-2xl);
    padding-bottom: var(--ig-space-md);
    border-bottom: 2px solid var(--ig-navy);
}

.ig-section-title {
    font-family: var(--ig-font-heading);
    font-size: var(--ig-text-4xl);
    font-weight: 800;
    color: var(--ig-navy);
    margin: 0;
}

.ig-section-link {
    font-size: 14px;
    color: var(--ig-accent-blue);
    text-decoration: none;
    font-family: var(--ig-font-ui);
    font-weight: 700;
    letter-spacing: 0.3px;
    transition: color var(--ig-transition-base);
}

.ig-section-link:hover {
    color: var(--ig-accent-blue-hover);
}

/* =========================================
   Read Badge & Activity States
   ========================================= */

.ig-read-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(43, 122, 143, 0.95);
    color: white;
    padding: 6px 12px;
    border-radius: var(--ig-radius-sm);
    font-size: var(--ig-text-xs);
    font-weight: 700;
    font-family: var(--ig-font-ui);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

/* Read state styling */
.ingoal-activity--read .ig-card-image img {
    filter: saturate(0.5) brightness(0.9);
}

/* Premium badge */
.ig-premium-badge {
    display: inline-block;
    background: var(--ig-promo-yellow);
    color: var(--ig-navy);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--ig-text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: 8px;
}

/* =========================================
   Animations
   ========================================= */

@keyframes ig-fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes ig-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes ig-slide-in-left {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.ig-animate-fade-up {
    opacity: 0;
    animation: ig-fade-in-up 0.8s ease-out forwards;
}

.ig-animate-fade {
    opacity: 0;
    animation: ig-fade-in 0.6s ease-out forwards;
}

.ig-animate-slide-left {
    opacity: 0;
    animation: ig-slide-in-left 0.7s ease-out forwards;
}

/* Stagger delays */
.ig-delay-1 { animation-delay: 0.1s; }
.ig-delay-2 { animation-delay: 0.2s; }
.ig-delay-3 { animation-delay: 0.3s; }
.ig-delay-4 { animation-delay: 0.4s; }

/* =========================================
   Form Elements
   ========================================= */

.ig-input {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--ig-bg-white);
    border-radius: var(--ig-radius-sm);
    font-size: var(--ig-text-base);
    font-family: var(--ig-font-ui);
    background: var(--ig-bg-white);
    transition: border-color var(--ig-transition-base), box-shadow var(--ig-transition-base);
}

.ig-input:focus {
    outline: none;
    border-color: var(--ig-accent-blue);
    box-shadow: 0 0 0 3px rgba(43, 122, 143, 0.1);
}

.ig-input::placeholder {
    color: #999;
}

/* =========================================
   Responsive Breakpoints
   ========================================= */

@media (max-width: 1100px) {
    :root {
        --ig-container-padding: 40px;
        --ig-sidebar-width: 300px;
        --ig-gap-main: 40px;
    }
}

@media (max-width: 900px) {
    :root {
        --ig-container-padding: 30px;
    }
    
    .ig-layout-two-col {
        grid-template-columns: 1fr;
        gap: var(--ig-space-3xl);
    }
    
    .ig-sidebar {
        position: static;
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .ig-sidebar-module {
        margin-bottom: 0;
    }
    
    .ig-sidebar-module--span-full {
        grid-column: 1 / -1;
    }
    
    .ig-section-title {
        font-size: var(--ig-text-4xl);
    }
}

@media (max-width: 700px) {
    .ig-sidebar {
        grid-template-columns: 1fr;
    }
    
    .ig-section-header {
        flex-direction: column;
        gap: var(--ig-space-sm);
    }
}

@media (max-width: 500px) {
    :root {
        --ig-container-padding: 20px;
    }
    
    .ig-section-title {
        font-size: var(--ig-text-3xl);
    }
    
    .ig-heading--xl {
        font-size: var(--ig-text-3xl);
    }
    
    .ig-sidebar-module {
        padding: var(--ig-space-lg);
    }
}

/* =========================================
   Shared Site Header
   ========================================= */

.ig-site-header {
    background: var(--ig-navy);
    color: var(--ig-text-inverse);
    padding: 0;
    position: sticky;
    top: 0;
    z-index: var(--ig-z-header);
    transition: box-shadow var(--ig-transition-base);
}

.ig-site-header.scrolled {
    box-shadow: var(--ig-shadow-header);
}

.ig-site-header__inner {
    max-width: var(--ig-container-max);
    margin: 0 auto;
    padding: 0 var(--ig-container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
    gap: 20px;
}

/* Logo */
.ig-site-header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.ig-site-header__logo-img {
    height: 36px !important;
    width: auto !important;
    max-height: 36px !important;
    display: block;
}

.ig-site-header__logo-text {
    font-family: var(--ig-font-heading);
    font-size: 28px;
    font-weight: 800;
    color: var(--ig-text-inverse);
    letter-spacing: -0.02em;
    line-height: 1;
}

/* Navigation */
.ig-site-header__nav {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: nowrap;
    white-space: nowrap;
}

.ig-site-header__nav a {
    color: var(--ig-text-inverse);
    text-decoration: none;
    font-family: var(--ig-font-ui);
    font-size: 13px;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: var(--ig-radius-sm);
    transition: background var(--ig-transition-fast), color var(--ig-transition-fast);
    white-space: nowrap;
}

.ig-site-header__nav a:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Actions (Subscribe button) */
.ig-site-header__actions {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.ig-site-header__actions .ig-btn--primary {
    background: var(--ig-text-inverse);
    color: var(--ig-navy);
    padding: 10px 20px;
    font-size: 13px;
}

.ig-site-header__actions .ig-btn--primary:hover {
    background: var(--ig-ice-blue);
}

/* Mobile menu toggle */
.ig-site-header__mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.ig-site-header__mobile-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--ig-text-inverse);
    border-radius: 1px;
    transition: all var(--ig-transition-base);
}

/* Light variant (white background) */
.ig-site-header--light {
    background: var(--ig-bg-white);
    color: var(--ig-navy);
    border-bottom: 1px solid var(--ig-border-color);
}

.ig-site-header--light .ig-site-header__logo-text {
    color: var(--ig-navy);
}

.ig-site-header--light .ig-site-header__nav a {
    color: var(--ig-navy);
}

.ig-site-header--light .ig-site-header__nav a:hover {
    background: var(--ig-ice-blue);
}

.ig-site-header--light .ig-site-header__actions .ig-btn--primary {
    background: var(--ig-navy);
    color: var(--ig-text-inverse);
}

.ig-site-header--light .ig-site-header__actions .ig-btn--primary:hover {
    background: var(--ig-accent-blue);
}

.ig-site-header--light .ig-site-header__mobile-toggle span {
    background: var(--ig-navy);
}

/* Responsive header */
@media (max-width: 1200px) {
    .ig-site-header__nav a {
        padding: 8px 8px;
        font-size: 12px;
    }
    
    .ig-site-header__actions .ig-btn--primary {
        padding: 8px 16px;
        font-size: 12px;
    }
}

@media (max-width: 1000px) {
    .ig-site-header__nav {
        display: none;
    }
    
    .ig-site-header__mobile-toggle {
        display: flex;
    }
}

@media (max-width: 500px) {
    .ig-site-header__inner {
        height: 60px;
        padding: 0 20px;
    }
    
    .ig-site-header__logo-img {
        height: 30px;
    }
    
    .ig-site-header__logo-text {
        font-size: 24px;
    }
}

/* =========================================
   Shared Site Footer
   ========================================= */

.ig-site-footer {
    background: var(--ig-navy);
    color: rgba(255,255,255,0.7);
    padding: 60px 0 40px;
    margin-top: 0;
}

.ig-site-footer__inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--ig-container-padding);
}

.ig-site-footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.ig-site-footer__logo {
    height: 50px;
    width: auto;
    margin-bottom: 16px;
}

.ig-site-footer__about p {
    margin: 0;
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    line-height: 1.7;
}

.ig-site-footer__nav h5 {
    color: white;
    font-family: var(--ig-font-ui);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 16px 0;
}

.ig-site-footer__nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.ig-site-footer__nav li {
    list-style: none;
}

.ig-site-footer__nav li::before,
.ig-site-footer__nav li::marker {
    display: none !important;
    content: none !important;
}

.ig-site-footer__nav a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-family: var(--ig-font-ui);
    font-size: 14px;
    line-height: 2.2;
    transition: color var(--ig-transition-base);
}

.ig-site-footer__nav a:hover {
    color: white;
}

.ig-site-footer__bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
}

.ig-site-footer__bottom p {
    margin: 0;
    font-family: var(--ig-font-ui);
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

@media (max-width: 900px) {
    .ig-site-footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 40px;
    }
}

@media (max-width: 600px) {
    .ig-site-footer__grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .ig-site-footer {
        padding: 40px 0 30px;
    }
}

/* =========================================
   Header Dropdown Menus
   ========================================= */

.igo-header__dropdown {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    min-width: 180px;
    background: #fff !important;
    border-radius: 8px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.15);
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    z-index: 1000;
}

.igo-header__nav-item:hover .igo-header__dropdown {
    opacity: 1;
    visibility: visible;
}

.igo-header__dropdown-link {
    display: block;
    padding: 10px 16px;
    color: #1a1a1a !important;
    text-decoration: none;
    font-family: var(--ig-font-ui);
    font-size: 14px;
    font-weight: 500;
    transition: background 0.15s;
}

.igo-header__dropdown-link:hover {
    background: #f5f5f5;
    color: #1a1a1a !important;
}