:root {
    /* IF SOKAK COLOR PALETTE */
    --brand-red: #ea2158;
    --brand-blue: #1034a6;
    
    /* LIGHT MODE */
    --bg-color: #f0f0f2;
    --stripe-1: rgba(16, 52, 166, 0.04);
    --stripe-2: transparent;
    --card-bg: #ffffff;
    --text-main: #1a1a1a;
    --text-sub: #555555;
    --input-bg: #f8f8f8;
    --input-border: #ddd;
}

body.dark-mode {
    /* DARK MODE */
    --bg-color: #0a0e17;
    --stripe-1: rgba(16, 52, 166, 0.15);
    --stripe-2: transparent;
    --card-bg: #151a28;
    --text-main: #ffffff;
    --text-sub: #b0b3b8;
    --input-bg: #0f1219;
    --input-border: #333;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: 'Montserrat', sans-serif;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    min-height: 100vh; margin: 0; padding: 20px; box-sizing: border-box;
    position: relative; overflow-x: hidden;
}

.bg-pattern {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; z-index: -1;
    background-image: repeating-linear-gradient(-45deg, var(--stripe-1) 0px, var(--stripe-1) 20px, var(--stripe-2) 20px, var(--stripe-2) 40px);
}

.container { 
    width: 100%; max-width: 450px; text-align: center; z-index: 1; 
    padding-top: max(20px, env(safe-area-inset-top)); /* ZIRH: iPhone Kamera Adası Koruması */
    padding-bottom: max(20px, env(safe-area-inset-bottom));
    margin-left: auto; margin-right: auto;
}

.brand-sub { 
    font-family: 'Oswald', sans-serif; color: var(--brand-red); 
    font-size: 1.1rem; letter-spacing: 2px; margin-bottom: 20px; 
    font-weight: 700; text-transform: uppercase;
}

.card {
    background-color: var(--card-bg); padding: 30px 20px; border-radius: 16px;
    box-shadow: 0 15px 50px rgba(0,0,0,0.15); border-bottom: 6px solid var(--brand-red);
    text-align: left; transition: background 0.3s; width: 100%; box-sizing: border-box;
}

h2 { margin-top: 0; font-size: 1.1rem; color: var(--brand-blue); font-weight: 800; text-align: center; text-transform: uppercase; margin-bottom: 20px;}

.input-group { margin-bottom: 15px; }
.input-group label { display: block; font-size: 0.75rem; font-weight: 700; margin-bottom: 6px; color: var(--text-sub); text-transform: uppercase; letter-spacing: 1px;}

input[type="text"], input[type="tel"], input[type="number"], select {
    width: 100%; padding: 14px; font-size: 16px; font-weight: 600;
    border: 2px solid var(--input-border); border-radius: 10px;
    background-color: var(--input-bg); color: var(--text-main);
    outline: none; box-sizing: border-box; font-family: 'Montserrat', sans-serif;
    transition: 0.2s;
}

input:focus, select:focus { border-color: var(--brand-blue); background-color: var(--card-bg); box-shadow: 0 0 0 4px rgba(16, 52, 166, 0.1); }

button.primary-btn {
    margin-top: 10px; width: 100%; padding: 16px;
    font-family: 'Oswald', sans-serif; font-size: 18px; letter-spacing: 1px;
    color: #fff; background-color: var(--brand-red);
    border: none; cursor: pointer; border-radius: 10px;
    box-shadow: 0 4px 0 #b01840; transition: 0.2s;
}
button.primary-btn:active { transform: translateY(4px); box-shadow: none; }
button.primary-btn:disabled { background-color: #ccc; box-shadow: none; cursor: not-allowed; opacity: 0.7; }

button.secondary-btn {
    margin-top: 15px; width: 100%; padding: 12px;
    font-family: 'Montserrat', sans-serif; font-size: 0.8rem; font-weight: 700;
    color: var(--brand-blue); background-color: transparent;
    border: 2px solid var(--brand-blue); cursor: pointer; border-radius: 10px;
    transition: 0.2s;
}
button.secondary-btn:active { transform: scale(0.98); }

.screen { display: none; width: 100%; }
.active-screen { display: block; animation: fadeIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275); }
@keyframes fadeIn { from { opacity:0; transform: translateY(15px) scale(0.98); } to { opacity:1; transform: translateY(0) scale(1); } }

/* Logo & Theme */
.embedded-logo {
    width: 160px; height: 60px; background-image: url('../res/if-sokak.png');
    background-size: contain; background-repeat: no-repeat; background-position: center;
    margin: 0 auto 10px auto; pointer-events: none; user-select: none; -webkit-user-drag: none;
}
body.dark-mode .embedded-logo { filter: brightness(0) invert(1); }

.theme-switch {
    position: fixed; 
    top: max(20px, env(safe-area-inset-top)); /* ZIRH: iPhone Kamera Adası Koruması */
    right: 20px; width: 45px; height: 45px;
    background-color: var(--card-bg); border: 2px solid var(--brand-blue); color: var(--brand-blue);
    border-radius: 50%; display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; cursor: pointer; transition: 0.3s; z-index: 1000; box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}
.theme-switch:hover { transform: scale(1.1) rotate(15deg); background-color: var(--brand-blue); color: #fff; }
body.dark-mode .theme-switch { border-color: var(--brand-red); color: var(--brand-red); }
body.dark-mode .theme-switch:hover { background-color: var(--brand-red); color: #fff; }

/* ŞIK BİLDİRİM (TOAST) */
#toast-container { position: fixed; top: max(20px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 10px; pointer-events: none; width: 90%; max-width: 400px;}
.toast { background: var(--card-bg); color: var(--text-main); padding: 14px 20px; border-radius: 12px; box-shadow: 0 10px 30px rgba(0,0,0,0.15); font-weight: 700; font-size: 0.85rem; display: flex; align-items: center; gap: 12px; opacity: 0; transform: translateY(-20px) scale(0.95); transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55); border-left: 4px solid transparent; }
.toast.show { opacity: 1; transform: translateY(0) scale(1); }
.toast.success { border-left-color: #27ae60; } .toast.success i { color: #27ae60; font-size: 1.2rem; }
.toast.error { border-left-color: var(--brand-red); } .toast.error i { color: var(--brand-red); font-size: 1.2rem; }
body.dark-mode .toast { box-shadow: 0 10px 30px rgba(0,0,0,0.5); border: 1px solid var(--input-border); border-left-width: 4px; }

/* ========================================================================== */
/* PWA CHAT (SPLIT SCREEN) MOBİL ARAYÜZ ZIRHI                                 */
/* ========================================================================== */

html, body {
    height: 100%;
    height: 100dvh; /* Mobil adres çubuğuna göre dinamik hesaplar */
    margin: 0;
    padding: 0;
    overflow: hidden;
    display: block !important; /* ÖNEMLİ: Giriş ekranındaki ortalama huyunu ezer, en tepeye yapıştırır! */
    background-color: var(--bg-color);
}

.app-layout { 
    display: flex; 
    width: 100%; 
    height: 100%; 
    height: 100dvh;
    max-width: 1600px; 
    margin: 0 auto; 
    position: relative;
}

/* SOL PANEL: SOHBET LİSTESİ */
.chat-list-pane { width: 350px; background: var(--card-bg); border-right: 1px solid var(--input-border); display: flex; flex-direction: column; flex-shrink: 0; z-index: 10; transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1); }

/* SAĞ PANEL: SOHBET İÇİ */
.chat-room-pane { flex: 1; display: flex; flex-direction: column; background-image: repeating-linear-gradient(-45deg, var(--stripe-1) 0px, var(--stripe-1) 20px, var(--stripe-2) 20px, var(--stripe-2) 40px); position: relative; z-index: 5; transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);}

/* MOBİL (Mobile-First) ZIRHI: Dar ekranlarda veya DİKEY tutulan Tabletlerde paneller üst üste biner */
@media (max-width: 1024px) and (orientation: portrait), (max-width: 768px) {
    .chat-list-pane { width: 100%; position: absolute; height: 100%; top: 0; left: 0; }
    .chat-room-pane { width: 100%; position: absolute; height: 100%; top: 0; left: 0; transform: translateX(100%); }
    .app-layout.in-chat .chat-list-pane { transform: translateX(-30%); opacity: 0; pointer-events: none; }
    .app-layout.in-chat .chat-room-pane { transform: translateX(0); }
    
    /* iPhone/Android Çentik (Safe Area) kalkanı: Klavyenin ve adres çubuğunun altında kalmasını engeller */
    .chat-input-area {
        padding-bottom: calc(10px + env(safe-area-inset-bottom));
    }
}

/* HEADER VE LİSTELER */
.app-header { 
    padding: max(15px, env(safe-area-inset-top)) 20px 15px 20px; /* ZIRH: iPhone Kamera Adası Koruması */
    background: var(--card-bg); display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid var(--input-border); flex-shrink: 0;
}
.app-header h1 { font-family: 'Oswald', sans-serif; margin: 0; font-size: 1.2rem; color: var(--brand-blue); letter-spacing: 1px;}

.chat-items { flex: 1; overflow-y: auto; display: flex; flex-direction: column; }
.chat-items::-webkit-scrollbar { width: 4px; }
.chat-items::-webkit-scrollbar-thumb { background-color: var(--input-border); rounded-radius: 4px; }

.chat-item { background: transparent; padding: 15px 20px; cursor: pointer; display: flex; gap: 15px; align-items: center; border-bottom: 1px solid rgba(0,0,0,0.05); transition: background 0.2s;}
body.dark-mode .chat-item { border-bottom-color: rgba(255,255,255,0.05); }
.chat-item:hover { background: var(--input-bg); }
.chat-item.active { background: rgba(16, 52, 166, 0.05); border-left: 4px solid var(--brand-blue); padding-left: 16px;}
body.dark-mode .chat-item.active { background: rgba(16, 52, 166, 0.2); }

/* Chat İçeriği Tasarımı */
.chat-messages { flex: 1; overflow-y: auto; padding: 20px; display: flex; flex-direction: column; gap: 12px; scroll-behavior: smooth;}
.chat-input-area { padding: 10px 15px; background: var(--card-bg); border-top: 1px solid var(--input-border); display: flex; gap: 10px; align-items: center; padding-bottom: max(10px, env(safe-area-inset-bottom));}
.chat-input-area input { flex: 1; margin: 0; padding: 12px 15px; border-radius: 20px; background: var(--input-bg); border: 1px solid var(--input-border); color: var(--text-main); font-size: 14px;}
.btn-send { width: 42px; height: 42px; border-radius: 50%; background: var(--brand-blue); color: white; border: none; display: flex; justify-content: center; align-items: center; cursor: pointer; font-size: 1.1rem; flex-shrink: 0; transition: 0.2s;}
.btn-send:disabled { background: var(--text-sub); opacity: 0.5; }

.back-btn { display: none; background: transparent; border: none; color: var(--brand-red); font-size: 1.2rem; cursor: pointer; padding: 5px 10px 5px 0;}
@media (max-width: 1024px) and (orientation: portrait), (max-width: 768px) { .back-btn { display: block; } }

.user-avatar { width: 45px; height: 45px; border-radius: 50%; background: linear-gradient(135deg, var(--brand-blue), var(--brand-red)); color: white; display: flex; justify-content: center; align-items: center; font-weight: 800; font-size: 1.2rem; flex-shrink: 0; }
.chat-info { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.chat-info-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 3px;}
.chat-info-top h4 { margin: 0; font-size: 0.95rem; font-weight: 700; color: var(--text-main); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.chat-time { font-size: 0.7rem; color: var(--text-sub); font-weight: 600; white-space: nowrap; }
.chat-last-msg { font-size: 0.8rem; color: var(--text-sub); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

/* Mesaj Baloncukları */
.msg-bubble { max-width: 80%; padding: 10px 14px; border-radius: 16px; font-size: 0.85rem; line-height: 1.4; position: relative; word-wrap: break-word;}
.msg-in { align-self: flex-start; background: var(--card-bg); color: var(--text-main); border: 1px solid var(--input-border); border-top-left-radius: 4px; }
.msg-out { align-self: flex-end; background: var(--brand-blue); color: #fff; border-top-right-radius: 4px; }
.msg-time { display: block; text-align: right; font-size: 0.65rem; margin-top: 4px; opacity: 0.7; }

/* SWITCH TOGGLE ZIRHI */
.switch { position: relative; display: inline-block; width: 44px; height: 22px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--input-border); transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 16px; width: 16px; left: 3px; bottom: 3px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: #27ae60; }
input:checked + .slider:before { transform: translateX(22px); }

/* SAĞ TIK / BASILI TUT MENÜSÜ ZIRHI */
.ctx-btn {
    background: transparent; border: none; padding: 12px 15px; text-align: left; 
    font-size: 0.85rem; font-family: 'Montserrat', sans-serif; font-weight: 700; 
    color: var(--text-main); display: flex; align-items: center; gap: 12px; 
    cursor: pointer; border-bottom: 1px solid var(--input-border); transition: 0.2s;
}
.ctx-btn:hover { background: var(--input-bg); color: var(--brand-blue); padding-left: 20px;}
.ctx-btn:last-child { border-bottom: none; }
.ctx-btn i { width: 16px; text-align: center; }

/* HIZLI İFADE (REACTION) ZIRHI */
.quick-react-btn { background:none; border:none; font-size:1.5rem; cursor:pointer; transition:transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275); padding:0; }
.quick-react-btn:hover { transform: scale(1.3); }

/* ÖZEL KAYDIRMA ÇUBUĞU (SCROLLBAR) ZIRHI */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--input-border); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--brand-blue); }

/* YAPIŞKAN TARİH AYRACI (FLOATING DATE) ZIRHI */
.date-separator-wrapper {
    position: sticky;
    top: 10px;
    z-index: 40;
    width: 100%;
    display: flex;
    justify-content: center;
    pointer-events: none;
    margin-top: 10px;
    margin-bottom: 15px;
}
.date-separator-badge {
    background: rgba(243, 244, 246, 0.95);
    backdrop-filter: blur(8px);
    color: #374151;
    font-size: 0.65rem;
    font-weight: 900;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 6px 16px;
    border-radius: 9999px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(229, 231, 235, 0.5);
    opacity: 1; /* ZIRH: Kaydırma olmasa da artık hep görünür (Sabit) */
}
body.dark-mode .date-separator-badge {
    background: rgba(30, 41, 59, 0.95);
    color: #d1d5db;
    border-color: rgba(51, 65, 85, 0.5);
}

/* ZIRH: Balonların üst üste binmesini engelleyen z-index motoru */
.msg-bubble { 
    position: relative; 
    z-index: 10; 
    transition: z-index 0.2s;
}
.msg-bubble:hover { z-index: 50; }

/* ========================================================================== */
/* YENİ ZIRH: iPHONE DYNAMIC ISLAND & NOTCH (ÇENTİK) KORUMASI                 */
/* ========================================================================== */
/* Tam ekran modallar (Kamera, Editör, Lightbox vb.) içindeki üst butonları HTML'e dokunmadan çentikten kurtarır */
#cameraModal > div:first-child,
#editorModal > div:first-child {
    top: max(20px, env(safe-area-inset-top)) !important;
}
#lightbox-bg > div:first-child {
    top: max(25px, env(safe-area-inset-top)) !important;
}