/*
Theme Name: Bilmeceler Theme
Description: High-performance, modern editorial puzzle theme for Bilmeceler.com.tr
Author: Eren Yasli
Version: 2.0.0
Text Domain: bilmeceler
*/

/* ==========================================================================
   DESIGN SYSTEM (Sections 45, 46, 47, 48 of Master Spec)
   ========================================================================== */
:root {
    /* Color Palette - Section 46 */
    --bg-color: #FCFBF8;
    --card-bg: #FFFFFF;
    --text-main: #17181C;
    --text-muted: #667085;
    --primary: #5B4AE7;
    --primary-hover: #4838C7;
    --soft-accent: #EEEAFE;
    --border: #E7E5E0;
    --border-hover: #D0CFC8;

    /* Spacing Scale - Section 82 (4, 8, 12, 16, 24, 32, 48, 64) */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 24px;
    --space-6: 32px;
    --space-7: 48px;
    --space-8: 64px;

    /* Radii - Section 82 */
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-input: 10px;
    --radius-badge: 999px;

    /* System Font Stack - Section 47 */
    --font-system: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Containers */
    --max-width: 1200px;
    --readable-width: 740px;
}

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

html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

body {
    font-family: var(--font-system);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color 0.15s ease;
}

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

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
    width: 100%;
}

.readable-container {
    max-width: var(--readable-width);
    margin: 0 auto;
    width: 100%;
}

/* ==========================================================================
   HEADER & NAVIGATION (Section 49)
   ========================================================================== */
.site-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
    padding: var(--space-3) 0;
    position: relative;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-3);
    position: relative;
}

.site-logo {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.03em;
    display: flex;
    align-items: center;
    gap: var(--space-2);
    white-space: nowrap;
}

/* Mobile Actions & Toggle */
.mobile-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-toggle-input {
    display: none;
}

.nav-toggle-btn {
    display: none; /* hidden on desktop */
}

.btn-random-mobile {
    display: none; /* hidden on desktop */
}

/* Desktop Navigation */
.site-nav {
    display: flex;
    align-items: center;
    gap: var(--space-5);
}

.site-nav a {
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
}

.site-nav a:hover {
    color: var(--primary);
}

/* Dropdown Menu (Accessible & Pure CSS) */
.nav-item-dropdown {
    position: relative;
}

.nav-dropdown-btn {
    background: transparent;
    border: none;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) 0;
    transition: color 0.15s ease;
    white-space: nowrap;
}

.nav-dropdown-btn:hover,
.nav-item-dropdown:hover .nav-dropdown-btn {
    color: var(--primary);
}

.dropdown-arrow {
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

.nav-item-dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    min-width: 230px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-btn);
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);
    list-style: none;
    padding: var(--space-2) 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    pointer-events: none;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 100;
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown-menu li a {
    display: block;
    padding: 8px 16px;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    transition: all 0.15s ease;
}

.dropdown-menu li a:hover {
    background: var(--soft-accent);
    color: var(--primary);
}

.btn-random-header {
    background-color: var(--soft-accent);
    color: var(--primary);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-badge);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.btn-random-header:hover {
    background-color: var(--primary);
    color: #FFFFFF;
}

/* ==========================================================================
   MOBILE HEADER RESPONSIVE BREAKPOINT (< 768px)
   ========================================================================== */
@media (max-width: 767px) {
    .btn-random-mobile {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 38px;
        height: 38px;
        background-color: var(--soft-accent);
        border-radius: var(--radius-btn);
        font-size: 1.15rem;
        text-decoration: none;
        flex-shrink: 0;
    }

    .nav-toggle-btn {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        width: 40px;
        height: 40px;
        border: 1px solid var(--border);
        border-radius: var(--radius-btn);
        background: var(--card-bg);
        cursor: pointer;
        gap: 4px;
        padding: 8px;
        flex-shrink: 0;
    }

    .nav-toggle-btn .bar {
        display: block;
        width: 18px;
        height: 2px;
        background-color: var(--text-main);
        border-radius: 2px;
        transition: all 0.2s ease-in-out;
    }

    /* Hamburger to X Animation on Toggle */
    .nav-toggle-input:checked + .nav-toggle-btn .bar:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .nav-toggle-input:checked + .nav-toggle-btn .bar:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle-input:checked + .nav-toggle-btn .bar:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    /* Mobile Dropdown Panel */
    .site-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        width: 100%;
        background: var(--card-bg);
        border-bottom: 2px solid var(--primary);
        box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.1);
        padding: var(--space-4);
        flex-direction: column;
        gap: var(--space-2);
        z-index: 1000;
        box-sizing: border-box;
    }

    .nav-toggle-input:checked ~ .site-nav {
        display: flex;
        animation: navSlideDown 0.2s ease-out;
    }

    @keyframes navSlideDown {
        from { opacity: 0; transform: translateY(-8px); }
        to { opacity: 1; transform: translateY(0); }
    }

    .site-nav a {
        display: block;
        padding: 10px var(--space-2);
        font-size: 1.05rem;
        border-bottom: 1px solid var(--border);
        width: 100%;
    }

    .nav-item-dropdown {
        width: 100%;
    }

    .nav-dropdown-btn {
        width: 100%;
        justify-content: space-between;
        font-size: 1.05rem;
        padding: 10px var(--space-2);
        border-bottom: 1px solid var(--border);
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        border: none;
        background: var(--bg-color);
        margin: var(--space-2) 0;
        border-radius: var(--radius-btn);
        padding: var(--space-2) 0;
    }

    .dropdown-menu li a {
        padding: 8px var(--space-4);
        font-size: 0.95rem;
        border-bottom: none;
    }

    .btn-random-header {
        display: none;
    }
}

/* ==========================================================================
   HOMEPAGE HERO (Section 50)
   ========================================================================== */
.hero-section {
    text-align: center;
    padding: var(--space-7) 0 var(--space-6);
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.2rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.03em;
    color: var(--text-main);
    margin-bottom: var(--space-3);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

.hero-actions {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-3);
    flex-wrap: wrap;
    max-width: 580px;
    margin: 0 auto;
}

.search-form-hero {
    display: flex;
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-input);
    overflow: hidden;
    transition: border-color 0.2s;
}

.search-form-hero:focus-within {
    border-color: var(--primary);
}

.search-input-hero {
    flex: 1;
    border: none;
    padding: var(--space-3) var(--space-4);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-main);
    background: transparent;
    outline: none;
}

.search-btn-hero {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0 var(--space-4);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
}

.btn-random-hero {
    background: var(--soft-accent);
    color: var(--primary);
    border: none;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-btn);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

.btn-random-hero:hover {
    background: var(--primary);
    color: white;
}

/* ==========================================================================
   RIDDLE GRID & CARDS (Section 48, 51)
   ========================================================================== */
.section-title {
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
    color: var(--text-main);
}

.bilmece-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

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

@media (min-width: 1024px) {
    .bilmece-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.bilmece-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: var(--space-5);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.bilmece-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.bilmece-meta-tag {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    margin-bottom: var(--space-3);
}

.bilmece-card-question {
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--text-main);
    margin-bottom: var(--space-4);
    flex-grow: 1;
}

.bilmece-card-question a {
    color: var(--text-main);
}

.bilmece-card-question a:hover {
    color: var(--primary);
}

/* Native <details> <summary> Answer Toggle (Section 32, 40, 51) */
.bilmece-disclosure {
    margin-top: auto;
    border-top: 1px solid var(--border);
    padding-top: var(--space-3);
}

.bilmece-disclosure summary {
    list-style: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--primary);
    user-select: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) 0;
}

.bilmece-disclosure summary::-webkit-details-marker {
    display: none;
}

.bilmece-disclosure summary::after {
    content: "↓";
    font-size: 1.1rem;
    transition: transform 0.2s ease;
}

.bilmece-disclosure[open] summary::after {
    transform: rotate(180deg);
}

.bilmece-disclosure .answer-content {
    background-color: var(--soft-accent);
    color: var(--primary);
    font-weight: 700;
    font-size: 1.05rem;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-btn);
    margin-top: var(--space-2);
}

/* ==========================================================================
   CATEGORY GRID (Section 52)
   ========================================================================== */
.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.category-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-btn);
    padding: var(--space-4);
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: all 0.2s ease;
}

.category-card:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-2px);
}

/* ==========================================================================
   SINGLE RIDDLE PAGE (Section 40, 53)
   ========================================================================== */
.breadcrumbs {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.breadcrumbs a {
    color: var(--text-muted);
}

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

.single-riddle-box {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.riddle-header-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.single-riddle-title {
    font-size: clamp(1.4rem, 4vw, 1.85rem);
    font-weight: 700;
    line-height: 1.45;
    color: var(--text-main);
    margin-bottom: var(--space-6);
}

.single-answer-disclosure {
    background: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: var(--space-4) var(--space-5);
}

.single-answer-disclosure summary {
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.single-answer-disclosure summary::-webkit-details-marker {
    display: none;
}

.single-answer-disclosure .answer-content {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border);
}

.single-answer-tag {
    font-size: 0.85rem;
    font-weight: 800;
    color: #10B981;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.single-answer-text {
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--text-main);
}

.riddle-explanation {
    margin-top: var(--space-4);
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   PAGINATION (Section 12, 13)
   ========================================================================== */
.pagination {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin: var(--space-7) 0;
}

.pagination a, .pagination span {
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-btn);
    background: var(--card-bg);
    border: 1px solid var(--border);
    color: var(--text-main);
    font-weight: 600;
    font-size: 0.95rem;
}

.pagination .current {
    background: var(--primary);
    color: #FFFFFF;
    border-color: var(--primary);
}

/* ==========================================================================
   FOOTER (Section 55)
   ========================================================================== */
.site-footer {
    background-color: var(--card-bg);
    border-top: 1px solid var(--border);
    padding: var(--space-7) 0;
    margin-top: var(--space-8);
    font-size: 0.9rem;
    color: var(--text-muted);
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: var(--space-5);
    flex-wrap: wrap;
    margin-bottom: var(--space-4);
}

.footer-nav a {
    color: var(--text-muted);
    font-weight: 600;
}

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

.footer-copy {
    text-align: center;
}

/* ==========================================================================
   ADSENSE CLS SHIELDING & AD WRAPPERS (Section 6.1)
   ========================================================================== */
.ad-slot-wrapper {
    display: block;
    width: 100%;
    margin: var(--space-6) auto;
    overflow: hidden;
    position: relative;
    contain: layout-margin;
    text-align: center;
}

.ad-slot-wrapper ins.adsbygoogle {
    display: block !important;
    width: 100% !important;
    min-width: 280px;
    margin: 0 auto;
}

.ad-slot-horizontal {
    max-width: 728px;
    min-height: 90px;
}

.ad-slot-rectangle {
    max-width: 728px;
    min-height: 280px;
}

@media (max-width: 767px) {
    .ad-slot-horizontal {
        min-height: 60px;
        max-width: 320px;
    }
    .ad-slot-rectangle {
        min-height: 250px;
        max-width: 300px;
    }
}