/* --- TEMEL STİLLER --- */
:root { 
    --ytu-blue: #262262; --ytu-dark-blue: #151730; --ytu-gold: #a28f61; 
    --bg-overlay: rgba(31, 34, 86, 0.70); 
    --danger: #d9534f; --success: #27ae60; --past-gray: #7f8c8d; --vegan-green: #2ecc71;
    --sidebar-width: 280px;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', sans-serif; }
body.no-scroll { overflow: hidden; touch-action: none; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: rgba(0, 0, 0, 0.1); border-radius: 10px; }
::-webkit-scrollbar-thumb { background: var(--ytu-gold); border-radius: 10px; }

body { background-color: var(--ytu-blue); color: white; min-height: 100vh; display: flex; overflow-x: hidden; }
body::before { content: ''; position: fixed; inset: 0; background: var(--bg-overlay); z-index: -1; backdrop-filter: blur(5px); }

/* --- SIDEBAR --- */
.sidebar {
    position: fixed; left: 0; top: 0; bottom: 0; width: var(--sidebar-width);
    background: rgba(21, 23, 48, 0.98); border-right: 2px solid var(--ytu-gold);
    z-index: 200; transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex; flex-direction: column; box-shadow: 5px 0 20px rgba(0,0,0,0.5);
}
.sidebar-header {
    height: 70px; display: flex; align-items: center; justify-content: center;
    border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 1.3rem; font-weight: 900; color: var(--ytu-gold); letter-spacing: 1px;
}
.sidebar-content { padding: 25px 20px; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 15px; }

.segmented-control { display: flex; background: #0b0c1a; border-radius: 8px; overflow: hidden; border: 1px solid #333;}
.seg-btn { flex: 1; padding: 12px 0; background: transparent; border: none; color: #888; cursor: pointer; font-weight: bold; transition: 0.3s; font-size: 1rem;}
.seg-btn.active { background: var(--ytu-gold); color: #151730; }

.sidebar-menu-btn {
    width: 100%; padding: 15px; background: rgba(255,255,255,0.05); border: 1px solid #333;
    color: white; border-radius: 8px; cursor: pointer; text-align: left; display: flex; align-items: center; gap: 12px; transition: 0.2s; font-size: 1rem; font-weight: bold;
}
.sidebar-menu-btn:hover { background: rgba(162, 143, 97, 0.2); border-color: var(--ytu-gold); color: var(--ytu-gold);}
.sidebar-menu-btn i { font-size: 1.2rem; width: 25px; text-align: center; }

/* --- ANA İÇERİK & HEADER --- */
.main-wrapper { flex: 1; margin-left: var(--sidebar-width); transition: margin-left 0.3s; min-height: 100vh; display: flex; flex-direction: column; width: calc(100% - var(--sidebar-width)); }
.main-wrapper.expanded { margin-left: 0; width: 100%; }

header {
    position: sticky; top: 0; z-index: 100; display: flex; justify-content: space-between; align-items: center;
    padding: 0 20px; background: rgba(21, 23, 48, 0.98); border-bottom: 2px solid var(--ytu-gold); box-shadow: 0 4px 20px rgba(0,0,0,0.4); height: 70px;
}

.hamburger-btn { background: transparent; border: none; color: white; font-size: 1.5rem; cursor: pointer; transition: color 0.2s;}
.hamburger-btn:hover { color: var(--ytu-gold); }

/* ZAMAN NAVİGATÖRÜ */
.date-navigator { display: flex; align-items: center; gap: 15px; font-weight: 900; font-size: 1.2rem; letter-spacing: 1px;}
.nav-arrow { background: rgba(255,255,255,0.1); border: 1px solid #555; color: white; border-radius: 50%; width: 35px; height: 35px; cursor: pointer; transition: 0.2s; display: flex; align-items: center; justify-content: center;}
.nav-arrow:hover { background: var(--ytu-gold); color: #151730; border-color: var(--ytu-gold); transform: scale(1.1);}
#nav-date-label { min-width: 150px; text-align: center; color: var(--ytu-gold); }

/* --- KART DÜZENİ --- */
.feed-container { max-width: 1200px; margin: 20px auto; padding: 0 20px 40px; width: 100%; display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 20px; }

.menu-card {
    border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.5); overflow: hidden; display: flex; flex-direction: column; cursor: pointer;
    transition: transform 0.3s; background: var(--ytu-dark-blue); border: 2px solid transparent;
}
.menu-card:hover { transform: translateY(-5px); }

.card-past { border-color: var(--past-gray); opacity: 0.85; filter: grayscale(20%);}
.card-past .menu-card-header { background: var(--past-gray); color: white; }
.card-today { border-color: var(--success); box-shadow: 0 0 20px rgba(39, 174, 96, 0.2);}
.card-today .menu-card-header { background: var(--success); color: white; }
.card-future { border-color: var(--ytu-gold); }
.card-future .menu-card-header { background: var(--ytu-gold); color: #1f2256; }

.menu-card-header { text-align: center; padding: 12px; font-weight: 900; font-size: 1.1rem; letter-spacing: 0.5px; }
.menu-card-body { padding: 15px; flex: 1; display: flex; flex-direction: column; background: rgba(0,0,0,0.2);}

.meal-title { font-size: 0.9rem; color: #aaa; text-transform: uppercase; font-weight: bold; margin-bottom: 12px; display:flex; gap:8px; align-items:center;}
.meal-list { display: flex; flex-direction: column; gap: 8px; }
.meal-item { font-size: 1.05rem; color: #eee; display: flex; justify-content: space-between; border-bottom: 1px solid rgba(255,255,255,0.05); padding-bottom: 6px;}
.meal-item-name::before { content: "•"; color: var(--ytu-gold); margin-right: 8px; font-size: 1.2rem; line-height: 1; }
.meal-item-cal { font-size: 0.8rem; color: #888; background: rgba(0,0,0,0.4); padding: 2px 6px; border-radius: 6px; height: fit-content; margin-top: 2px;}

.stats-bar { display: flex; justify-content: space-around; padding: 12px 15px; background: rgba(0,0,0,0.5); border-top: 1px solid rgba(255,255,255,0.1);}
.stat-pill { display: flex; gap: 6px; align-items: center; font-size: 0.95rem; color: #aaa; }

/* --- MODAL (POPUP) STİLLERİ --- */
.modal { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.85); z-index: 2000; align-items: center; justify-content: center; backdrop-filter: blur(5px);}
.modal.show { display: flex; animation: fadeIn 0.2s; }
@keyframes fadeIn { from { opacity: 0; transform: scale(0.98);} to { opacity: 1; transform: scale(1);} }

.popup-box { 
    background: var(--ytu-dark-blue); 
    border: 2px solid var(--ytu-gold); 
    padding: 25px; 
    border-radius: 12px; 
    width: 650px; 
    max-width: 95vw; 
    position: relative; 
    max-height: 90vh; 
    overflow-y: auto;
    display: flex; 
    flex-direction: column;
    gap: 15px; 
}

.settings-group { 
    margin-bottom: 0; 
    background: rgba(0,0,0,0.3); 
    padding: 15px; 
    border-radius: 8px; 
    border: 1px solid rgba(255,255,255,0.05);
}

@media (min-width: 768px) {
    #settingsModal .popup-box {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }
    #settingsModal .popup-box > h2 {
        grid-column: 1 / -1; 
        margin-bottom: 5px;
    }
    #settingsModal .popup-box > .close-modal-btn {
        grid-column: unset; 
    }
}
.close-modal-btn { position: absolute; top: 15px; right: 15px; background: rgba(0,0,0,0.6); color: white; cursor: pointer; font-size: 1.2rem; z-index: 1010; width: 35px; height: 35px; border-radius: 50%; border: 1px solid #444; display: flex; align-items: center; justify-content: center;}

/* Ayarlar Modalı Form Elemanları */
.settings-group { margin-bottom: 20px; background: rgba(0,0,0,0.3); padding: 15px; border-radius: 8px; border: 1px solid rgba(255,255,255,0.05);}
.settings-label { display: block; font-weight: bold; color: var(--ytu-gold); margin-bottom: 10px; font-size: 0.9rem; text-transform: uppercase;}
.settings-select { width: 100%; padding: 10px; background: #111; color: white; border: 1px solid #555; border-radius: 5px; outline: none; font-size: 1rem; cursor: pointer;}

/* Mobil Uyum */
@media (max-width: 768px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.closed { transform: translateX(0); }
    .main-wrapper { margin-left: 0; width: 100%; }
    .date-navigator { font-size: 1rem; }
    #nav-date-label { min-width: 120px; }
}
@media (min-width: 769px) { .sidebar.closed { transform: translateX(-100%); } }
.sidebar-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.7); z-index: 199; }
.sidebar-overlay.show { display: block; }
@media (min-width: 769px) { .sidebar-overlay { display: none !important; } }