/*
Theme Name: Intermokum Theme
Theme URI: https://intermokum.com
Description: Universeel parent theme voor alle Intermokum satellieten. Mozaïek-timeline, vier card-types, viewport modal, styling via wp_options.
Version: 1.0.0
Author: Pepijn / Max
Author URI: https://intermokum.com
Text Domain: intermokum-theme
Requires at least: 6.5
Requires PHP: 8.0
*/

/* ============================================
   CSS VARIABELEN — overschrijfbaar via wp_options
   ============================================ */

:root {
    /* Kleuren — defaults, worden overschreven door wp_options */
    --imt-accent: #2563eb;
    --imt-accent-hover: #1d4ed8;
    --imt-accent-light: #dbeafe;
    --imt-bg: #ffffff;
    --imt-bg-alt: #f8fafc;
    --imt-text: #1e293b;
    --imt-text-secondary: #64748b;
    --imt-border: #e2e8f0;
    --imt-card-bg: #ffffff;
    --imt-card-shadow: 0 1px 3px rgba(0,0,0,0.08);
    --imt-card-shadow-hover: 0 4px 12px rgba(0,0,0,0.12);
    --imt-overlay: rgba(0,0,0,0.6);
    --imt-success: #16a34a;
    --imt-danger: #dc2626;
    --imt-warning: #d97706;

    /* Typography */
    --imt-font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --imt-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --imt-font-size-base: 16px;
    --imt-line-height: 1.65;

    /* Layout */
    --imt-max-width: 1280px;
    --imt-grid-gap: 16px;
    --imt-card-radius: 8px;
    --imt-header-height: 64px;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root.imt-dark {
        --imt-bg: #0f172a;
        --imt-bg-alt: #1e293b;
        --imt-text: #f1f5f9;
        --imt-text-secondary: #94a3b8;
        --imt-border: #334155;
        --imt-card-bg: #1e293b;
        --imt-card-shadow: 0 1px 3px rgba(0,0,0,0.3);
        --imt-card-shadow-hover: 0 4px 12px rgba(0,0,0,0.4);
    }
}

/* ============================================
   RESET & BASE
   ============================================ */

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: var(--imt-font-size-base);
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--imt-font-primary);
    color: var(--imt-text);
    background: var(--imt-bg);
    line-height: var(--imt-line-height);
    overflow-x: hidden;
}

a {
    color: var(--imt-accent);
    text-decoration: none;
    transition: color 0.2s;
}
a:hover {
    color: var(--imt-accent-hover);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   HEADER
   ============================================ */

.imt-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--imt-bg);
    border-bottom: 1px solid var(--imt-border);
    height: var(--imt-header-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
}

.imt-header-inner {
    max-width: var(--imt-max-width);
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.imt-logo {
    font-family: var(--imt-font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--imt-text);
}

.imt-logo img {
    height: 36px;
    width: auto;
}

.imt-nav {
    display: flex;
    gap: 24px;
    align-items: center;
}

.imt-nav a {
    color: var(--imt-text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}
.imt-nav a:hover,
.imt-nav a.active {
    color: var(--imt-accent);
}

.imt-dark-toggle {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.25rem;
    color: var(--imt-text-secondary);
    padding: 4px;
}

/* ============================================
   MOZAÏEK TIMELINE — TETRIS GRID (H38.2)
   ============================================ */

.imt-timeline {
    max-width: var(--imt-max-width);
    margin: 24px auto;
    padding: 0 24px;
}

.imt-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--imt-grid-gap);
    grid-auto-flow: dense;
}

/* Card groottes */
.imt-card {
    background: var(--imt-card-bg);
    border-radius: var(--imt-card-radius);
    overflow: hidden;
    box-shadow: var(--imt-card-shadow);
    transition: box-shadow 0.25s, transform 0.25s;
    cursor: pointer;
    position: relative;
}
.imt-card:hover {
    box-shadow: var(--imt-card-shadow-hover);
    transform: translateY(-2px);
}

/* Klein: 1 kolom */
.imt-card--small {
    grid-column: span 1;
}

/* Normaal: 1 kolom, grotere thumbnail */
.imt-card--normal {
    grid-column: span 1;
}

/* Groot: 2 kolommen */
.imt-card--large {
    grid-column: span 2;
}

/* Breed: volle breedte */
.imt-card--wide {
    grid-column: 1 / -1;
}

/* Card thumbnail */
.imt-card__thumb {
    width: 100%;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    background: var(--imt-bg-alt);
}

.imt-card--small .imt-card__thumb {
    aspect-ratio: 1 / 1;
}

.imt-card--large .imt-card__thumb {
    aspect-ratio: 21 / 9;
}

/* Card body */
.imt-card__body {
    padding: 16px;
}

.imt-card__category {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--imt-accent);
    margin-bottom: 6px;
}

.imt-card__title {
    font-family: var(--imt-font-heading);
    font-size: 1.125rem;
    font-weight: 700;
    line-height: 1.3;
    color: var(--imt-text);
    margin-bottom: 8px;
}

.imt-card--small .imt-card__title {
    font-size: 0.9375rem;
}

.imt-card--large .imt-card__title {
    font-size: 1.375rem;
}

.imt-card__excerpt {
    font-size: 0.875rem;
    color: var(--imt-text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.imt-card__meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 12px;
    font-size: 0.75rem;
    color: var(--imt-text-secondary);
}

.imt-card__author-img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}

/* ============================================
   CARD TYPES (H38.3)
   ============================================ */

/* Advertisement card */
.imt-card--ad {
    border: 1px solid var(--imt-border);
}
.imt-card--ad::after {
    content: 'Advertisement';
    position: absolute;
    top: 8px;
    right: 8px;
    font-size: 0.625rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--imt-text-secondary);
    background: var(--imt-bg);
    padding: 2px 6px;
    border-radius: 3px;
    opacity: 0.8;
}

/* YourStory card */
.imt-card--yourstory .imt-card__body {
    padding: 20px;
    background: var(--imt-bg-alt);
}
.imt-card--yourstory .imt-card__excerpt {
    font-style: italic;
    font-size: 0.9375rem;
    color: var(--imt-text);
    -webkit-line-clamp: 4;
}

/* ============================================
   VIEWPORT MODAL (H38.5)
   ============================================ */

.imt-modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--imt-overlay);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}
.imt-modal-overlay.active {
    display: block;
}

.imt-modal {
    background: var(--imt-bg);
    max-width: 860px;
    margin: 40px auto;
    border-radius: 12px;
    min-height: 80vh;
    position: relative;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.imt-modal__close {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    justify-content: flex-end;
    padding: 16px 20px;
    background: var(--imt-bg);
    border-radius: 12px 12px 0 0;
}

.imt-modal__close-btn {
    background: var(--imt-bg-alt);
    border: 1px solid var(--imt-border);
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.125rem;
    color: var(--imt-text-secondary);
    transition: background 0.2s;
}
.imt-modal__close-btn:hover {
    background: var(--imt-border);
}

/* Artikel content in modal */
.imt-article {
    padding: 0 40px 60px;
}

.imt-article__hero {
    margin: 0 -40px 32px;
}
.imt-article__hero img {
    width: 100%;
    max-height: 480px;
    object-fit: cover;
}

.imt-article__category {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--imt-accent);
    margin-bottom: 12px;
}

.imt-article__title {
    font-family: var(--imt-font-heading);
    font-size: 2.25rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    color: var(--imt-text);
}

.imt-article__meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--imt-border);
    font-size: 0.875rem;
    color: var(--imt-text-secondary);
}

.imt-article__author-img {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    object-fit: cover;
}

.imt-article__author-name {
    font-weight: 600;
    color: var(--imt-text);
}

.imt-article__content {
    font-size: 1.0625rem;
    line-height: 1.8;
}

.imt-article__content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin: 36px 0 16px;
}
.imt-article__content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 28px 0 12px;
}
.imt-article__content p {
    margin-bottom: 18px;
}
.imt-article__content img {
    margin: 24px 0;
    border-radius: var(--imt-card-radius);
}
.imt-article__content blockquote {
    border-left: 3px solid var(--imt-accent);
    padding: 12px 20px;
    margin: 24px 0;
    font-style: italic;
    color: var(--imt-text-secondary);
    background: var(--imt-bg-alt);
    border-radius: 0 var(--imt-card-radius) var(--imt-card-radius) 0;
}
.imt-article__content ul, .imt-article__content ol {
    margin: 16px 0;
    padding-left: 24px;
}
.imt-article__content li {
    margin-bottom: 6px;
}

/* Author box */
.imt-author-box {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 24px;
    margin-top: 40px;
    background: var(--imt-bg-alt);
    border-radius: var(--imt-card-radius);
}
.imt-author-box__img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
}
.imt-author-box__name {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 4px;
}
.imt-author-box__bio {
    font-size: 0.875rem;
    color: var(--imt-text-secondary);
    line-height: 1.5;
}

/* ============================================
   NEWSLETTER SIGNUP
   ============================================ */

.imt-newsletter {
    max-width: var(--imt-max-width);
    margin: 40px auto;
    padding: 40px 24px;
    text-align: center;
    background: var(--imt-bg-alt);
    border-radius: var(--imt-card-radius);
}
.imt-newsletter__title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.imt-newsletter__form {
    display: flex;
    gap: 8px;
    max-width: 420px;
    margin: 16px auto 0;
}
.imt-newsletter__input {
    flex: 1;
    padding: 10px 14px;
    border: 1px solid var(--imt-border);
    border-radius: 6px;
    font-size: 0.875rem;
    font-family: inherit;
}
.imt-newsletter__btn {
    padding: 10px 20px;
    background: var(--imt-accent);
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: background 0.2s;
}
.imt-newsletter__btn:hover {
    background: var(--imt-accent-hover);
}

/* ============================================
   FOOTER
   ============================================ */

.imt-footer {
    max-width: var(--imt-max-width);
    margin: 60px auto 0;
    padding: 24px;
    border-top: 1px solid var(--imt-border);
    text-align: center;
    font-size: 0.8125rem;
    color: var(--imt-text-secondary);
}

/* ============================================
   LOADING / LAZY LOAD
   ============================================ */

.imt-loading {
    text-align: center;
    padding: 40px;
    color: var(--imt-text-secondary);
}
.imt-loading::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 2px solid var(--imt-border);
    border-top-color: var(--imt-accent);
    border-radius: 50%;
    animation: imt-spin 0.6s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}
@keyframes imt-spin {
    to { transform: rotate(360deg); }
}

/* ============================================
   RESPONSIVE
   ============================================ */

@media (max-width: 1024px) {
    .imt-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .imt-card--large {
        grid-column: span 2;
    }
}

@media (max-width: 640px) {
    .imt-grid {
        grid-template-columns: 1fr;
    }
    .imt-card--large,
    .imt-card--wide {
        grid-column: span 1;
    }
    .imt-article {
        padding: 0 20px 40px;
    }
    .imt-article__hero {
        margin: 0 -20px 24px;
    }
    .imt-article__title {
        font-size: 1.625rem;
    }
    .imt-modal {
        margin: 0;
        border-radius: 0;
        min-height: 100vh;
    }
    .imt-header {
        padding: 0 16px;
    }
    .imt-timeline {
        padding: 0 16px;
    }
}