/* assets/css/style.css */

/* ==========================================================================
   1. Değişkenler ve Temel Ayarlar (Variables & Base Setup)
   ========================================================================== */
:root {
    /* DİNAMİK RENKLER - Bu değerler dynamic.css tarafından üzerine yazılacak */
    --primary-color: #e62117;
    --primary-color-hover: #c2180f;
    --secondary-color: #f0f0f0;
    --secondary-color-hover: #e0e0e0;
    --btn-primary-text-color: #ffffff;
    --btn-primary-text-color-hover: #ffffff;
    --btn-secondary-text-color: #0d0d0d;
    --font-family: 'Roboto', -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
    
    /* SABİT RENKLER */
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --background-color: #f9f9f9;
    --box-background-color: #ffffff;
    --text-color: #0d0d0d;
    --text-muted-color: #606060;
    --border-color: #e0e0e0;
    --border-radius: 8px;
    --transition-speed: 0.2s ease-in-out;
}

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

body {
    font-family: var(--font-family);
    margin: 0;
    background-color: var(--background-color);
    color: var(--text-color);
    font-size: 16px; /* rem biriminin temeli (1rem = 16px) */
    line-height: 1.6;
}

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

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

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

/* GÜNCELLEME: Genel Başlık Stilleri (Tipografi) */
h1, h2, h3, h4 {
    margin-top: 0;
    margin-bottom: 0.75rem; /* Başlık altı boşluk */
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 1.8rem; /* ~29px */ }
h2 { font-size: 1.5rem; /* ~24px */ }
h3 { font-size: 1.25rem; /* ~20px */ }
h4 { font-size: 1.1rem; /* ~17.6px */ }

/* ==========================================================================
   2. Yeniden Kullanılabilir Bileşenler (Reusable Components)
   ========================================================================== */

/* ===== Buton Stilleri ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--border-radius);
    border: 1px solid transparent;
    cursor: pointer;
    font-weight: 500;
    text-decoration: none;
    line-height: 1.5;
    text-align: center;
    transition: background-color var(--transition-speed), color var(--transition-speed), border-color var(--transition-speed);
}
.btn-primary { 
    background-color: var(--primary-color); 
    color: var(--btn-primary-text-color);
    border-color: var(--primary-color);
}
.btn-primary:hover { 
    background-color: var(--primary-color-hover); 
    color: var(--btn-primary-text-color-hover);
    border-color: var(--primary-color-hover);
}
.btn-secondary { 
    background-color: var(--secondary-color); 
    color: var(--btn-secondary-text-color);
    border-color: var(--secondary-color);
}
.btn-secondary:hover { 
    background-color: var(--secondary-color-hover); 
    color: var(--btn-secondary-text-color);
    border-color: var(--secondary-color-hover);
}
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ===== Form Elemanları ===== */
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-muted-color);
    font-size: 0.9rem;
}
.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group input[type="file"],
.form-group input[type="number"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}
.form-group textarea {
    resize: vertical;
    min-height: 100px;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(230, 33, 23, 0.15);
}

/* ===== Uyarı Mesajları ===== */
.form-success, .error-list, .form-messages .error-list {
    padding: 15px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid transparent;
    list-style: none;
    margin-left: 0;
}
.form-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
    text-align: center;
}
.error-list {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
    padding-left: 20px;
    margin: 0;
}

/* ==========================================================================
   3. Ana Site Yapısı (Main Layout)
   ========================================================================== */
.site-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}
.main-layout {
    display: grid;
    grid-template-columns: 240px 1fr;
    grid-template-rows: auto 1fr auto;
    grid-template-areas: "header header" "sidebar main" "sidebar footer";
}
.site-header { grid-area: header; }
.left-sidebar { grid-area: sidebar; }
.main-content { grid-area: main; padding: 25px; }
.site-footer { grid-area: footer; }
.page-container {
    max-width: 800px;
    margin: 0 auto;
}
.page-title { 
    font-size: 1.5rem; /* h2 ile aynı */
    margin-bottom: 20px; 
}

/* ===== Header ===== */
.site-header {
    background-color: var(--box-background-color);
    padding: 0 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 60px;
    border-bottom: 1px solid var(--border-color);
    position: sticky; top: 0; z-index: 1000;
}
.header-logo a { font-size: 1.5rem; font-weight: 700; color: var(--text-color); }
.search-bar { width: 400px; margin-left: 50px; }
.search-bar input { width: 100%; padding: 10px 15px; border-radius: 20px; border: 1px solid var(--border-color); background-color: var(--background-color); }
.user-menu .btn { margin-left: 10px; }

/* ===== Sidebar ===== */
.left-sidebar { background-color: var(--box-background-color); padding: 20px 10px; border-right: 1px solid var(--border-color); }
.sidebar-nav ul { list-style: none; padding: 0; margin: 0; }
.sidebar-nav a { display: flex; align-items: center; padding: 12px 15px; color: var(--text-color); border-radius: var(--border-radius); margin-bottom: 5px; }
.sidebar-nav a:hover { background-color: #f0f0f0; }
.sidebar-nav a.active { background-color: #e5e5e5; font-weight: 500; }

/* ===== Footer ===== */
.site-footer { background-color: var(--box-background-color); padding: 20px 25px; border-top: 1px solid var(--border-color); text-align: center; font-size: 0.9em; color: var(--text-muted-color); }

/* ==========================================================================
   4. Özel Bölümler ve Sayfalar (Specific Sections & Pages)
   ========================================================================== */

/* ===== Video Grid & Cards ===== */
.video-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 25px; }
.video-card { display: flex; flex-direction: column; }
.video-thumbnail { position: relative; width: 100%; margin-bottom: 12px; }
.video-thumbnail img { width: 100%; border-radius: var(--border-radius); aspect-ratio: 16 / 9; object-fit: cover; background-color: #e0e0e0; transition: transform 0.2s ease-in-out; }
.video-card:hover .video-thumbnail img { transform: scale(1.05); }
.video-duration { position: absolute; bottom: 8px; right: 8px; background: rgba(0,0,0,0.8); color: #fff; padding: 2px 6px; border-radius: 4px; font-size: 0.8em; font-weight: 500; }
.video-details { display: flex; gap: 12px; }
.author-avatar img { width: 36px; height: 36px; border-radius: 50%; background-color: #e0e0e0; }
.video-title-link { text-decoration: none; color: inherit; }
.video-title { 
    font-size: 1.1rem; /* h4 ile aynı */
    font-weight: 500; 
    line-height: 1.4; 
    margin: 6px 0 0; 
    display: -webkit-box; 
    -webkit-line-clamp: 2; 
    -webkit-box-orient: vertical; 
    overflow: hidden; 
}
.video-title-link:hover .video-title { color: var(--primary-color); }
.video-meta { font-size: 0.9em; color: var(--text-muted-color); line-height: 1.2; }
.video-author-link { text-decoration: none; color: inherit; }
.video-author-link:hover { color: var(--primary-color); }
.video-card-tags { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.tag-item { font-size: 0.8em; padding: 2px 8px; background-color: #e9e9e9; color: var(--text-muted-color); border-radius: 10px; }


/* ===== Authentication Pages (Giriş/Kayıt) ===== */
.auth-page-body { display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
.auth-container { width: 100%; max-width: 420px; }
.auth-logo { text-align: center; margin-bottom: 25px; }
.auth-logo a { display: inline-block; color: var(--text-color); text-decoration: none; }
.auth-logo a h1 { font-size: 2rem; /* h1 ile aynı */ }
.auth-box { background-color: var(--box-background-color); padding: 30px 40px; border-radius: var(--border-radius); box-shadow: 0 4px 15px rgba(0, 0, 0, 0.07); border: 1px solid var(--border-color); }
.auth-box h1 { text-align: center; font-size: 1.8rem; /* h1'den biraz küçük */ margin-bottom: 25px; }
.auth-box button[type="submit"] { width: 100%; padding: 12px 20px; border: none; background-color: var(--primary-color); color: var(--btn-primary-text-color); font-size: 1rem; font-weight: 500; cursor: pointer; transition: background-color var(--transition-speed); }
.auth-box button[type="submit"]:hover { background-color: var(--primary-color-hover); color: var(--btn-primary-text-color-hover); }
.auth-switch { text-align: center; margin-top: 20px; font-size: 0.95rem; }


/* ===== Profile & Profile Edit Pages ===== */
.profile-header-banner { height: 250px; background-color: var(--text-muted-color); background-size: cover; background-position: center; border-radius: var(--border-radius); }
.profile-header-info { display: flex; align-items: flex-end; padding: 0 25px; transform: translateY(-50px); margin-bottom: -50px; }
.profile-avatar { width: 140px; height: 140px; border-radius: 50%; border: 4px solid var(--box-background-color); background-color: var(--box-background-color); box-shadow: 0 4px 10px rgba(0,0,0,0.15); margin-right: 20px; }
.profile-user-details { flex-grow: 1; margin-bottom: 10px; }
.profile-name { font-size: 2rem; margin-bottom: 5px; }
.profile-username { margin: 0; color: var(--text-muted-color); font-size: 1.1rem; }
.profile-actions { margin-bottom: 15px; display: flex; align-items: center; gap: 10px; }
.profile-actions form { margin: 0; }
.profile-content { padding-top: 25px; }

.edit-form-container { background-color: var(--box-background-color); padding: 30px; border-radius: var(--border-radius); border: 1px solid var(--border-color); }
.form-section { margin-bottom: 30px; padding-bottom: 20px; border-bottom: 1px solid #f0f0f0; }
.form-section:last-of-type { border-bottom: none; padding-bottom: 0; margin-bottom: 0; }
.form-section h3 { font-size: 1.25rem; /* h3 ile aynı */ margin-bottom: 20px; }
.current-image { margin-top: 10px; font-size: 0.9rem; }
.current-image img { border-radius: 8px; margin-top: 5px; }
.current-avatar { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; }
.current-cover { width: 100%; max-width: 300px; height: auto; }
.form-actions { margin-top: 30px; display: flex; gap: 15px; }
.form-actions button, .form-actions a { width: auto; }


/* ===== Video Watch Page ===== */
.watch-page-grid { display: grid; grid-template-columns: 1fr 350px; gap: 25px; }
.video-player { width: 100%; border-radius: var(--border-radius); background-color: #000; aspect-ratio: 16 / 9; }
.video-header { padding: 20px 0 15px 0; }
.video-header .video-title { font-size: 1.25rem; /* GÜNCELLEME: 20px */ margin-bottom: 8px; }
.video-meta { color: var(--text-muted-color); font-size: 0.95rem; }

.video-interaction-panel { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 20px; padding: 10px 0; border-top: 1px solid var(--border-color); border-bottom: 1px solid var(--border-color); }
.channel-info { display: flex; align-items: center; gap: 12px; }
.channel-avatar { width: 48px; height: 48px; border-radius: 50%; }
.channel-name { font-weight: 500; font-size: 1.1rem; }
.channel-name-link { text-decoration: none; color: var(--text-color); }
.channel-name-link:hover .channel-name { color: var(--primary-color); }
.channel-subs { font-size: 0.85rem; color: var(--text-muted-color); }
.subscribe-btn.subscribed { background-color: var(--secondary-color); border-color: var(--secondary-color); color: var(--text-muted-color); }
.subscribe-btn.subscribed:hover { background-color: var(--secondary-color-hover); border-color: var(--secondary-color-hover); }

.action-buttons-group { display: flex; gap: 10px; }
.action-buttons-group .btn { background-color: var(--secondary-color); border-color: var(--secondary-color); color: var(--text-color); }
.action-buttons-group .btn:hover { background-color: var(--secondary-color-hover); border-color: var(--secondary-color-hover); }
.action-buttons-group .btn i { font-size: 1.1rem; }
.like-button.liked { background-color: var(--primary-color) !important; border-color: var(--primary-color) !important; color: #fff !important; }

.description-box { background-color: var(--secondary-color); padding: 15px; border-radius: var(--border-radius); margin-top: 20px; line-height: 1.7; font-size: 0.95rem; }
.description-box h4 { font-size: 1.1rem; }
.video-tags { margin-top: 15px; display: flex; flex-wrap: wrap; gap: 10px; }
.tag-link { background-color: #fff; padding: 3px 10px; border-radius: 15px; font-size: 0.85em; text-decoration: none; color: var(--text-muted-color); }
.tag-link:hover { background-color: #e0e0e0; }

.sidebar-recommendations h3 { font-size: 1.1rem; margin-bottom: 15px; }
.rec-card { display: flex; gap: 12px; margin-bottom: 15px; text-decoration: none; color: inherit; }
.rec-thumbnail { flex-shrink: 0; width: 160px; }
.rec-thumbnail img { width: 100%; border-radius: var(--border-radius); aspect-ratio: 16 / 9; object-fit: cover; background-color: #e0e0e0; }
.rec-details { display: flex; flex-direction: column; }
.rec-title { font-size: 0.95rem; font-weight: 500; margin: 0 0 5px 0; line-height: 1.4; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.rec-user, .rec-views { font-size: 0.85rem; color: var(--text-muted-color); }
.rec-user-link { text-decoration: none; }
.rec-user-link .rec-user:hover { color: var(--primary-color); }

.video-processing-placeholder { background-color: #222; color: #fff; display: flex; flex-direction: column; justify-content: center; align-items: center; aspect-ratio: 16 / 9; border-radius: var(--border-radius); text-align: center; padding: 20px; }
.video-processing-placeholder h3 { font-size: 1.5rem; margin-bottom: 15px; }
.video-processing-placeholder .fa-gears { animation: fa-spin 5s infinite linear; }
@keyframes fa-spin { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } }

/* ===== Comments Section (Yorumlar) ===== */
.comments-section { margin-top: 30px; }
.comments-title { font-size: 1.25rem; /* h3 ile aynı */ margin-bottom: 20px; border-bottom: 1px solid var(--border-color); padding-bottom: 10px;}
.comment-form-container { margin-bottom: 30px; }
.comment-form-container textarea { width: 100%; padding: 10px; border: 1px solid #ccc; border-radius: 5px; font-size: 1rem; }
.comment-form-container .form-actions { text-align: right; margin-top: 10px; }
.comment-login-prompt { background-color: #f5f5f5; padding: 15px; border-radius: 5px; text-align: center; }
.comment-item { display: flex; gap: 15px; margin-bottom: 20px; }
.comment-avatar img { width: 40px; height: 40px; border-radius: 50%; }
.comment-content { flex-grow: 1; }
.comment-header { font-size: 0.9rem; margin-bottom: 5px; }
.comment-author { font-weight: bold; text-decoration: none; color: inherit; }
.comment-author:hover { text-decoration: underline; color: var(--primary-color); }
.comment-date { color: #666; margin-left: 10px; }
.comment-actions { margin-top: 5px; }
.btn-reply { background: none; border: none; color: #666; cursor: pointer; padding: 0; font-size: 0.9rem; font-weight: bold; }
.btn-reply:hover { color: #000; }
.comment-replies { margin-top: 15px; padding-left: 25px; border-left: 2px solid #e0e0e0; }


/* ===== Video Upload Page ===== */
.manual-upload-section { background-color: #fffbe6; border: 1px solid #ffe58f; padding: 20px; border-radius: var(--border-radius); }
.manual-upload-title { color: #d46b08; }


/* ==========================================================================
   5. Yardımcı Bileşenler (Utility Components)
   ========================================================================== */

/* ===== Pagination ===== */
.pagination-container { margin-top: 40px; display: flex; justify-content: center; }
.pagination { display: flex; padding-left: 0; list-style: none; border-radius: var(--border-radius); overflow: hidden; border: 1px solid var(--border-color); }
.page-item .page-link { position: relative; display: block; padding: 10px 15px; margin-left: -1px; line-height: 1.25; color: var(--primary-color); background-color: #fff; border-left: 1px solid var(--border-color); text-decoration: none; transition: all 0.2s ease-in-out; }
.page-item:first-child .page-link { margin-left: 0; border-left: 0; }
.page-item:hover .page-link { background-color: #e9ecef; }
.page-item.active .page-link { z-index: 1; color: #fff; background-color: var(--primary-color); border-color: var(--primary-color); }
.page-item.disabled .page-link { color: #6c757d; pointer-events: none; background-color: #fff; border-color: #dee2e6; }


/* ==========================================================================
   6. Responsive Tasarım (Media Queries)
   ========================================================================== */
@media (max-width: 1200px) {
    .watch-page-grid { grid-template-columns: 1fr; }
    .sidebar-recommendations { margin-top: 30px; }
}
@media (max-width: 1024px) {
    .main-layout { grid-template-columns: 1fr; grid-template-areas: "header" "main" "footer"; }
    .left-sidebar { display: none; }
    .header-center { display: none; }
}
@media (max-width: 768px) {
    .video-grid { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
    .main-content { padding: 15px; }
    .site-header { padding: 0 15px; }
    .profile-header-info { flex-direction: column; align-items: center; text-align: center; transform: translateY(-70px); margin-bottom: -70px; }
    .profile-avatar { margin-right: 0; margin-bottom: 15px; }
    .profile-actions { margin-top: 15px; justify-content: center; }
    .video-interaction-panel { justify-content: center; }
}