/* =========================================
   1. RESET, FONT & VARIABEL WARNA (TEMA MODERN)
   ========================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Poppins', sans-serif;
}

:root {
    /* Palet Warna "Midnight Slate" (Elegan, Bersih, Profesional) */
    --bg-color: #0f172a;       /* Latar belakang utama (Dark Navy) */
    --sidebar-bg: #1e293b;     /* Latar belakang sidebar & card */
    --card-bg: #1e293b;        
    --primary-color: #6366f1;  /* Aksen utama (Indigo lembut) */
    --primary-hover: #4f46e5;
    --text-main: #f8fafc;      /* Teks putih gading */
    --text-muted: #94a3b8;     /* Teks abu-abu untuk deskripsi */
    --border-color: rgba(255, 255, 255, 0.08); /* Garis batas halus */
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
}

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

/* =========================================
   2. PEMBELAH LAYAR UTAMA 
   ========================================= */
.dashboard-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* =========================================
   3. SIDEBAR KIRI (NAVIGASI) 
   ========================================= */
nav {
    width: 260px;
    background: var(--sidebar-bg);
    height: 100vh;
    padding-top: 30px;
    transition: 0.3s;
    flex-shrink: 0;
    border-right: 1px solid var(--border-color);
}

.logo-web {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding: 0 25px;
}

.logo-web i {
    font-size: 28px;
    color: var(--primary-color);
}

.logo-web h2 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.navbar {
    list-style: none;
    padding: 0 15px;
}

.navbar li {
    margin-bottom: 8px;
}

.navbar a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 18px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.navbar a i {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

.navbar a:hover {
    background-color: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    transform: translateX(4px);
}

/* =========================================
   4. RUANG KANAN (KONTEN UTAMA) 
   ========================================= */
.wrap-kanan {
    flex: 1;
    padding: 40px 50px;
    overflow-y: auto;
    position: relative;
}

h1 {
    color: var(--text-main);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

p {
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 15px;
}

/* --- AREA LOGIN & PROFIL (Di Pojok Kanan Atas) --- */
.auth-buttons {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    align-items: center;
}

.btn-login {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 500;
    transition: 0.2s;
}

.btn-login:hover {
    color: var(--text-main);
}

.btn-signup {
    text-decoration: none;
    background-color: var(--primary-color);
    color: white;
    font-weight: 500;
    padding: 10px 20px;
    border-radius: 6px;
    transition: 0.2s;
}

.btn-signup:hover {
    background-color: var(--primary-hover);
}

.profilebar {
    position: absolute;
    top: 30px;
    right: 40px;
}

.image-profile {
    display: flex;
    align-items: center;
    gap: 12px;
}

.imageprofile {
    width: 45px;
    height: 45px;
    object-fit: cover;
    border-radius: 50%;
    border: 2px solid var(--border-color);
}

.nama_Kamu {
    color: var(--text-main);
    font-weight: 600;
    font-size: 14px;
}

/* =========================================
   5. AREA KARTU (GRID STATISTIK/INFO) 
   ========================================= */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.card:hover {
    transform: translateY(-4px);
    border-color: var(--primary-color);
}

.card-icon {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.card h3 {
    color: var(--text-main);
    font-size: 18px;
    font-weight: 600;
}

a { text-decoration: none; }
.card-link { color: inherit; }

/* =========================================
   6. AREA VIDEO PEMBELAJARAN (YOUTUBE)
   ========================================= */
.videoPembelajaran {
    background-color: rgba(255, 255, 255, 0.02); 
    border: 1px solid var(--border-color);
    padding: 35px;
    border-radius: 20px;
    display: grid;
    /* RAHASIA RESPONSIVE: Menggunakan min(100%, 300px) agar di HP sekecil apapun tidak luber ke kanan */
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
    gap: 30px;
    margin-top: 10px;
}

.video-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px; 
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    flex-direction: column;
    gap: 15px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    box-sizing: border-box;
}

.video-item:hover {
    transform: translateY(-6px);
    border-color: var(--primary-color);
    box-shadow: 0 15px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(99, 102, 241, 0.1);
}

.video-item iframe {
    width: 100%;
    max-width: 100%;
    aspect-ratio: 16/9;
    border-radius: 10px;
    border: none;
    background-color: var(--bg-color); 
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15); 
}

.video-item ul {
    list-style: none; /* Menghilangkan titik bawaan HTML */
    padding: 0 5px;
    margin: 0;
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.6;
}

.video-item ul li {
    margin-bottom: 8px; /* Jarak antar baris teks jika ada lebih dari 1 list */
}

/* =========================================
   7. HALAMAN LOGIN & FORM TAMBAH JADWAL 
   ========================================= */
.body-login {
    background-color: var(--bg-color);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    margin: 0; 
}

.login-box {
    background: var(--card-bg); 
    border: 1px solid var(--border-color);
    padding: 40px;
    border-radius: 16px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    text-align: left;
}

.login-box h2 { 
    color: var(--text-main); 
    font-size: 26px; 
    margin-bottom: 30px; 
    font-weight: 700; 
}

.input-group { margin-bottom: 20px; }
.input-group label { 
    display: block; 
    margin-bottom: 8px; 
    color: var(--text-muted); 
    font-size: 13px; 
    font-weight: 500; 
}

.input-group input, 
.input-group select,
.input-custom { 
    width: 100%; 
    padding: 12px 15px; 
    background-color: var(--bg-color); 
    border: 1px solid var(--border-color); 
    border-radius: 8px; 
    color: var(--text-main); 
    font-size: 14px;
    outline: none; 
    transition: 0.2s;
    box-sizing: border-box;
}

.input-group input:focus,
.input-group select:focus,
.input-custom:focus { 
    border-color: var(--primary-color); 
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.input-group input[type="time"]::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
    opacity: 0.6;
    transition: 0.2s;
}

.input-group input[type="time"]::-webkit-calendar-picker-indicator:hover {
    opacity: 1;
}

.btn-submit { 
    width: 100%; 
    padding: 14px; 
    background-color: var(--primary-color); 
    color: white; 
    border: none; 
    border-radius: 8px; 
    font-weight: 600; 
    font-size: 15px; 
    cursor: pointer; 
    margin-top: 10px; 
    transition: 0.2s;
}

.btn-submit:hover { 
    background-color: var(--primary-hover);
    transform: translateY(-2px); 
}

.login-box p { margin-top: 25px; font-size: 14px; color: var(--text-muted); text-align: center;}
.login-box a { color: var(--primary-color); font-weight: 600; text-decoration: none; }
.login-box a:hover { color: var(--text-main); }

/* =========================================
   8. TABEL JADWAL & SETTINGS 
   ========================================= */
.tabel-container {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    overflow-x: auto; 
    margin-top: 20px;
}

.tabel-jadwal {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.tabel-jadwal th {
    background-color: rgba(255,255,255, 0.03);
    color: var(--text-muted);
    padding: 16px 20px;
    font-weight: 500;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
}

.tabel-jadwal td {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 14px;
    vertical-align: middle;
}

.tabel-jadwal tbody tr:last-child td {
    border-bottom: none; 
}

.tabel-jadwal tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.btn-aksi {
    padding: 6px 12px;
    border-radius: 6px;
    color: white;
    font-size: 12px;
    font-weight: 500;
    margin-right: 5px;
    transition: 0.2s;
    border: none;
    cursor: pointer;
    display: inline-block;
    text-align: center;
}

.btn-aksi.edit { background-color: var(--warning-color); color: #fff; }
.btn-aksi.edit:hover { opacity: 0.8; }
.btn-aksi.hapus { background-color: var(--danger-color); }
.btn-aksi.hapus:hover { opacity: 0.8; }

.settings-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    max-width: 600px;
    margin-top: 20px;
}

.settings-card label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-muted);
    font-size: 14px;
}

.settings-card input[type="text"],
.settings-card input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-main);
    margin-bottom: 20px;
    outline: none;
}

.settings-card input:focus { border-color: var(--primary-color); }

.btn-save {
    background-color: var(--primary-color);
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}
.btn-save:hover { background-color: var(--primary-hover); transform: translateY(-2px); }

/* =========================================
   9. SCROLLBAR ELEGAN
   ========================================= */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg-color); }
::-webkit-scrollbar-thumb { background: var(--sidebar-bg); border-radius: 10px; border: 1px solid var(--border-color); }
::-webkit-scrollbar-thumb:hover { background: var(--primary-color); }

/* =========================================
   10. RESPONSIVE MOBILE (DIPERBAIKI)
   ========================================= */
@media screen and (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
        height: auto !important;
        overflow: visible; 
    }
    
    .wrap-kanan {
        width: 100%;
        padding: 20px 15px;
        overflow: visible;
    }

    nav {
        width: 100% !important;
        height: auto !important;
        padding: 20px 10px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        position: relative;
    }

    .logo-web { justify-content: center; margin-bottom: 20px; }
    .navbar { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
    .navbar li { margin-bottom: 0; }
    .navbar a { padding: 8px 12px; font-size: 14px; }
    
    .profilebar {
        position: relative !important; 
        top: 0 !important;
        right: 0 !important;
        display: flex;
        justify-content: center;
        margin-top: 15px;
        margin-bottom: 20px;
        order: -2; 
    }

    .auth-buttons {
        order: -1; 
        display: flex;
        flex-direction: column;
        gap: 10px;
        width: 100%;
        margin-bottom: 25px;
    }

    .auth-buttons a {
        width: 100%;
        text-align: center;
    }

    h1 { font-size: 22px; text-align: center; }
    p { text-align: center; }

    .card-container { grid-template-columns: 1fr; }
    
    /* Penyesuaian jarak video untuk layar kecil (HP) */
    .videoPembelajaran {
        padding: 15px;
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .video-item {
        padding: 12px;
    }

    .tabel-container {
        display: block;
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        border-radius: 8px;
    }
    
    .tabel-jadwal {
        min-width: 500px; 
    }
}