/* style landing page */
/* Tema Deep Ocean & Sand */
:root {
    --dark-blue-main: #0B1121;
    --dark-blue-sec: #131B2F;
    --accent-blue: #D4B895;
    --text-main: #F3F4F6;
    --text-sec: #9BA3B5;
    --border-color: #1F2942;
}

/* Gaya Body Umum (Bisa di-scroll, untuk Landing Page) */
body {
    background-color: var(--dark-blue-main);
    color: var(--text-main);
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
}

/* Navbar */
.navbar {
    background-color: rgba(11, 17, 33, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar-brand {
    color: var(--text-main) !important;
    font-weight: 700;
    letter-spacing: 1px;
}

.brand-ai {
    color: var(--accent-blue);
}

/* Hero Section */
.hero-section {
    min-height: 100dvh;
    display: flex;
    align-items: center;
    padding-top: 40px;
    /* offset navbar */
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 20px;
}

.hero-subtitle {
    color: var(--text-sec);
    font-size: 1.2rem;
    margin-bottom: 30px;
    line-height: 1.6;
}

.btn-custom-primary {
    background-color: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    padding: 12px 30px;
    font-weight: 600;
    border-radius: 50rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-custom-primary:hover {
    background-color: var(--accent-blue);
    color: var(--dark-blue-main);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(124, 179, 161, 0.2);
}

/* About Section */
.about-section {
    background-color: var(--dark-blue-sec);
    padding: 80px 0;
}

.section-title {
    color: var(--text-main);
    font-weight: 700;
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--accent-blue);
    bottom: -10px;
    left: 0%;
}

/* Tools Section */
.tools-section {
    padding: 80px 0;
}

.tool-card {
    background-color: var(--dark-blue-sec);
    border: 1px solid #233554;
    border-radius: 12px;
    padding: 30px;
    height: 100%;
    transition: transform 0.3s ease;
}

.tool-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent-blue);
}

.tool-icon {
    font-size: 4rem;
    color: var(--accent-blue);
    margin-bottom: 15px;
}

/* Footer */
.footer {
    background-color: #070A14;
    padding: 30px 0;
    color: var(--text-sec);
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid var(--border-color);
}

/* Responsive Adjustments untuk Layar HP */
@media (max-width: 768px) {
    .hero-section {
        text-align: center;
        padding-top: 40px;
        /* Memberi ruang agar tidak menabrak navbar */
        padding-bottom: 40px;
    }

    .hero-title {
        font-size: 2.2rem;
        /* Mengecilkan ukuran font judul utama */
        margin-bottom: 15px;
    }

    .hero-subtitle {
        font-size: 1rem;
        /* Mengecilkan ukuran font subjudul */
        margin-bottom: 25px;
    }

    .bi-chat-quote {
        font-size: 10rem !important;
        /* Mengecilkan ikon raksasa di hero section */
        margin-top: 30px;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .tool-card {
        padding: 20px;
        /* Mengurangi padding card agar tidak terlalu sesak */
    }

    .chat-messages {
        padding: 1rem;
    }

    .chat-input-area {
        padding: 12px;
        padding-bottom: calc(12px + env(safe-area-inset-bottom));
    }
}


/* style halaman chat */
/* Tema Deep Ocean & Sand */
:root {
    --dark-blue-main: #0B1121;
    --dark-blue-sec: #131B2F;
    --accent-blue: #D4B895;
    --text-main: #F3F4F6;
    --text-sec: #9BA3B5;
    --border-color: #1F2942;
}

/* Helper Class for 100dvh */
.min-h-100dvh {
    min-height: 100vh !important;
    min-height: 100dvh !important;
}

/* KUNCI PERBAIKAN: Memaksa tinggi layar 100% penuh */
/* Class KHUSUS untuk mengunci layar di Halaman Chat */
.chat-body {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    overflow: hidden;
    /* Matikan scroll body utama dan kunci ke viewport HP */
}

/* Sidebar Kiri */
.sidebar {
    width: 280px;
    background-color: var(--dark-blue-sec);
    border-right: 1px solid var(--border-color);
}

.brand-ai {
    color: var(--accent-blue);
}

/* Tombol Custom */
.btn-custom-outline {
    background-color: transparent;
    color: var(--accent-blue);
    border: 1px solid var(--accent-blue);
    border-radius: 50rem;
    transition: all 0.3s ease;
}

.btn-custom-outline:hover {
    background-color: var(--accent-blue);
    color: var(--dark-blue-main);
}

.btn-custom-fill {
    background-color: var(--accent-blue);
    color: var(--dark-blue-main);
    font-weight: 600;
    border: none;
    border-radius: 50rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.btn-custom-fill:hover {
    background-color: #C6A67A;
    color: var(--dark-blue-main);
    transform: translateY(-1px);
}

/* Area Obrolan Utama */
.chat-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    height: 100%;
    /* Memaksa container obrolan setinggi layar penuh */
    background-color: var(--dark-blue-main);
}

.chat-messages {
    flex: 1 1 auto;
    /* Membuat ruang pesan melar mengisi kekosongan */
    overflow-y: auto;
    padding: 2rem;
}

/* Gelembung Pesan */
.message-bubble {
    max-width: 85%;
    padding: 14px 20px;
    border-radius: 20px;
    margin-bottom: 20px;
    line-height: 1.6;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    word-break: break-word;
    overflow-wrap: break-word;
}

.message-user {
    background-color: var(--accent-blue);
    color: var(--dark-blue-main);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

/* Animasi Mengetik (Typing Indicator) */
.typing-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 4px;
}

.typing-dot {
    width: 6px;
    height: 6px;
    background-color: var(--text-sec);
    border-radius: 50%;
    animation: typingBounce 1.4s infinite ease-in-out both;
}

.typing-dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typingBounce {
    0%, 80%, 100% { transform: scale(0.3); opacity: 0.3; }
    40% { transform: scale(1); opacity: 1; }
}

.message-ai {
    background-color: var(--dark-blue-sec);
    color: var(--text-main);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

/* Area Input Text */
.chat-input-area {
    flex-shrink: 0;
    /* Mencegah area input menyusut */
    padding: 20px;
    padding-bottom: calc(20px + env(safe-area-inset-bottom));
    background-color: var(--dark-blue-main);
    border-top: 1px solid var(--border-color);
}

.input-box {
    background-color: var(--dark-blue-sec);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding-right: 60px;
    padding-left: 20px;
    padding-top: 14px;
    resize: none;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.1);
}

.input-box:focus {
    background-color: var(--dark-blue-sec);
    color: var(--text-main);
    border-color: var(--accent-blue);
    outline: none;
    box-shadow: 0 0 0 2px rgba(124, 179, 161, 0.3);
}

.input-box::placeholder {
    color: var(--text-sec);
}

.input-box:disabled {
    background-color: var(--dark-blue-main);
    color: var(--text-sec);
    border-color: var(--border-color);
    opacity: 0.7;
    cursor: not-allowed;
}

.btn-send {
    position: absolute;
    right: 30px;
    bottom: 25px;
    border-radius: 50%;
    width: 45px;
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--dark-blue-main);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-sec);
}

/* Modal Dark Theme */
.modal-content {
    background-color: var(--dark-blue-sec);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
}

.btn-close {
    filter: invert(1) grayscale(100%) brightness(200%);
}

.form-control-dark {
    background-color: var(--dark-blue-main);
    color: var(--text-main);
    border: 1px solid var(--border-color);
}

.form-control-dark:focus {
    background-color: var(--dark-blue-main);
    color: var(--text-main);
    border-color: var(--accent-blue);
    box-shadow: none;
}

.text-sec-custom {
    color: var(--text-sec) !important;
}

.border-bottom-custom {
    border-bottom: 1px solid var(--border-color) !important;
}

/* ==========================================
   PERBAIKAN SCROLL SIDEBAR HISTORY
   ========================================== */
#historyList {
    display: flex;
    flex-direction: column;
    /* Memaksa riwayat berbaris rapi ke bawah */
    flex-wrap: nowrap;
    /* Mencegah elemen meluber atau pindah ke kolom samping */
    overflow-y: auto;
    /* Menyalakan scroll vertikal (ke bawah) jika penuh */
    overflow-x: hidden;
    /* Mematikan/menyembunyikan scroll horizontal (ke samping) */

    /* Sesuaikan tinggi maksimal agar scrollbar muncul di dalam area list,
       bukan membuat seluruh halaman memanjang */
    max-height: 60vh;

    /* Tambahan agar scrollbar tidak menempel terlalu rapat di kanan */
    padding-right: 5px;
}

/* Memastikan setiap tombol history ukurannya pas 100% dari lebar sidebar */
#historyList .nav-item {
    width: 100%;
}

/* Opsional: Mempercantik bentuk scrollbar khusus untuk historyList (bergaya Mac/Modern) */
#historyList::-webkit-scrollbar {
    width: 6px;
}

#historyList::-webkit-scrollbar-track {
    background: transparent;
}

#historyList::-webkit-scrollbar-thumb {
    background-color: var(--border-color, #233554);
    border-radius: 10px;
}