@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-body: #0f172a;       /* Çok koyu lacivert */
    --bg-sidebar: #1e293b;    /* Sidebar rengi */
    --bg-card: #1e293b;       /* Kart rengi */
    --bg-input: #334155;      /* Input arkaplanı */
    
    --primary: #6366f1;       /* Ana renk (Indigo) */
    --primary-hover: #4f46e5;
    --accent: #8b5cf6;        /* İkincil renk (Violet) */
    
    --text-main: #f8fafc;     /* Ana yazı rengi */
    --text-muted: #94a3b8;    /* Soluk yazı rengi */
    
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --glow: 0 0 20px rgba(99, 102, 241, 0.15);
    
    --sidebar-width: 260px;
    --radius: 16px;
}

* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Outfit', sans-serif; }

body {
    background-color: var(--bg-body);
    color: var(--text-main);
    min-height: 100vh;
    overflow-x: hidden;
}

a { text-decoration: none; transition: 0.3s; }
ul { list-style: none; }

/* --- SCROLLBAR --- */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-body); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- LAYOUT --- */
.wrapper { display: flex; width: 100%; }

/* --- SIDEBAR --- */
.sidebar {
    width: var(--sidebar-width);
    height: 100vh;
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    position: fixed;
    top: 0; left: 0;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.logo {
    display: flex; align-items: center; gap: 10px;
    margin-bottom: 3rem; padding-left: 0.5rem;
}
.logo i { font-size: 2rem; color: var(--primary); }
.logo h2 { font-size: 1.5rem; font-weight: 700; letter-spacing: -0.5px; background: linear-gradient(to right, #fff, #94a3b8); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }

.menu { flex: 1; }
.menu li { margin-bottom: 0.5rem; }
.menu a {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 16px;
    border-radius: 12px;
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
}
.menu a i { font-size: 1.3rem; }

.menu a:hover, .menu a.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.1) 0%, rgba(99, 102, 241, 0) 100%);
    color: var(--primary);
    border-left: 3px solid var(--primary);
}

/* --- MAIN CONTENT --- */
.main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    padding: 2.5rem;
}

/* --- HEADER --- */
.header {
    display: flex; justify-content: space-between; align-items: center;
    margin-bottom: 2.5rem;
}
.header h1 { font-size: 1.8rem; font-weight: 600; }
.header p { color: var(--text-muted); margin-top: 5px; }

/* --- CARDS --- */
.cards-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px;
    margin-bottom: 2rem;
}
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--glow); border-color: var(--primary); }

.card-header { display: flex; justify-content: space-between; align-items: flex-start; margin-bottom: 1rem; }
.card h3 { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; text-transform: uppercase; letter-spacing: 0.5px; }
.card-icon { 
    width: 40px; height: 40px; border-radius: 10px; 
    display: flex; align-items: center; justify-content: center;
    font-size: 1.2rem; background: rgba(255,255,255,0.05); color: var(--text-main);
}
.card .number { font-size: 2.5rem; font-weight: 700; color: var(--text-main); }

/* Renkli Kart Kenarları */
.card.accent-border .card-icon { background: rgba(99, 102, 241, 0.2); color: var(--primary); }
.card.success-border .card-icon { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.card.danger-border .card-icon { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

/* --- FORMS & TASKS --- */
.task-form .form-row { display: flex; gap: 15px; margin-bottom: 15px; }
input, select, textarea {
    width: 100%; padding: 14px;
    background-color: var(--bg-body); border: 1px solid var(--border);
    color: #fff; border-radius: 10px; outline: none; transition: 0.3s;
    font-size: 0.95rem;
}
input:focus, select:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2); }

button { cursor: pointer; border: none; font-weight: 500; font-family: inherit; }
.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white; padding: 12px 24px; border-radius: 10px;
    transition: 0.3s; width: auto; display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: var(--glow); }

/* --- TABLE --- */
.table-responsive { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.task-table { width: 100%; border-collapse: collapse; background: var(--bg-card); }
.task-table th {
    text-align: left; padding: 18px;
    color: var(--text-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 1px;
    background-color: rgba(255,255,255,0.02);
    border-bottom: 1px solid var(--border);
}
.task-table td { padding: 18px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.task-table tr:last-child td { border-bottom: none; }
.task-table tr:hover { background-color: rgba(255,255,255,0.02); }

.badge-priority {
    padding: 6px 12px; border-radius: 20px; font-size: 0.75rem; font-weight: 600;
    display: inline-flex; align-items: center; gap: 5px;
}
.badge-priority::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background-color: currentColor; }
.badge-priority.low { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.badge-priority.medium { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.badge-priority.high { background: rgba(239, 68, 68, 0.1); color: var(--danger); }

/* --- LOGIN PAGE --- */
.login-body {
    background: radial-gradient(circle at top right, #1e1b4b, #0f172a);
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh;
}
.login-container {
    background: rgba(30, 41, 59, 0.7);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 3rem; width: 100%; max-width: 420px;
    border-radius: 24px; text-align: center;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}
.login-container h2 { font-size: 2rem; margin-bottom: 0.5rem; color: #fff; }
.login-container p { color: var(--text-muted); margin-bottom: 2rem; }
.btn-login { width: 100%; padding: 14px; border-radius: 12px; background: var(--primary); color: white; font-weight: 600; font-size: 1rem; margin-top: 1rem; transition: 0.3s; border: none; }
.btn-login:hover { background-color: var(--primary-hover); transform: translateY(-2px); }

/* --- MOBILE RESPONSIVE EKLEMELER (En Alta Ekleyin) --- */

/* Menü Açma Butonu (Masaüstünde gizli) */
.menu-toggle {
    display: none;
    font-size: 2rem;
    color: var(--text-main);
    cursor: pointer;
    margin-right: 15px;
}

/* Karartma Katmanı (Overlay) */
.overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    z-index: 90; /* Sidebar'ın hemen altında */
    display: none; /* Varsayılan gizli */
    opacity: 0;
    transition: opacity 0.3s;
}
.overlay.active { display: block; opacity: 1; }

/* --- MOBİL İÇİN MEDYA SORGULARI --- */
@media (max-width: 768px) {
    
    /* Sidebar Mobilde Gizlensin */
    .sidebar {
        left: -100%; /* Ekran dışına it */
        transition: 0.3s ease;
        box-shadow: 5px 0 15px rgba(0,0,0,0.5);
    }
    
    /* Sidebar Aktifken Görünsün */
    .sidebar.active {
        left: 0;
    }

    /* Ana İçerik Genişlesin */
    .main-content {
        margin-left: 0;
        width: 100%;
        padding: 1.5rem;
    }

    /* Header Düzeni */
    .header {
        flex-direction: row; /* Yan yana kalsınlar */
        align-items: center;
        margin-bottom: 2rem;
    }
    
    /* Menü Butonu Mobilde Görünsün */
    .menu-toggle {
        display: block;
    }

    /* Başlık Fontları Küçülsün */
    .header h1 { font-size: 1.4rem; }
    .header p { font-size: 0.85rem; }

    /* Kartlar */
    .cards-grid {
        grid-template-columns: 1fr; /* Tek sütun */
    }

    /* Tablolar */
    .table-responsive {
        border: 1px solid var(--border);
    }
    
    /* Login Kutusu */
    .login-container {
        width: 90%;
        padding: 2rem;
    }
}