/* Import Google Font - Menambahkan Playfair Display dan Lobster untuk pilihan cover */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600&family=Lobster&family=Montserrat:wght@600;800&family=Playfair+Display:wght@700&display=swap');

:root {
    /* Palette Warna Mewah (Deep Midnight & Gold Accent) */
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --accent-color: #f59e0b; /* Amber/Gold */
    --bg-dark: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background: radial-gradient(circle at top left, #1e293b, #0f172a);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column; /* Mengubah arah flex menjadi vertikal */
    align-items: center; /* Menengahkan item secara horizontal */
    padding: 3rem 1rem;
}

.container {
    width: 100%;
    max-width: 900px;
    background: var(--card-bg);
    backdrop-filter: blur(12px); /* Efek Kaca */
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    padding: 3rem;
}

/* Header Styling */
h1 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    font-size: 2.5rem;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1rem;
    letter-spacing: -1px;
}

p {
    color: var(--text-muted);
    font-weight: 300;
    margin-bottom: 2.5rem;
}

/* Input Styling Modern */
label {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

/* Menjadikan semua input, textarea, dan select mengisi lebar kontainernya */
input, textarea, select {
    width: 100%;
}


input[type="text"], 
input[type="number"], 
textarea, 
select {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: white;
    padding: 1rem;
    transition: all 0.3s ease;
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: #6366f1;
    background: rgba(15, 23, 42, 0.9);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

/* Buttons */
button {
    font-family: 'Montserrat', sans-serif;
    letter-spacing: 0.5px;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#generate-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 1.2rem;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
}

#generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.5);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-main);
    padding: 0.8rem 1.2rem; /* Menambahkan padding agar ukuran lebih seimbang */
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
    transform: translateY(-2px); /* Efek mengangkat sedikit saat hover */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2); /* Bayangan lembut */
}

/* MODAL LUXURY STYLE */
.modal-overlay {
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(8px);
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center; /* Menengahkan secara horizontal */
    align-items: center; /* Menengahkan secara vertikal */
    padding: 2rem 0; /* Memberi jarak atas-bawah */
    z-index: 9999;
}

.modal-content {
    background: #1e293b;
    border: 1px solid var(--accent-color);
    border-radius: 28px;
    padding: 2.5rem;
    width: 95%;
    max-width: 800px;
    box-shadow: 0 0 50px rgba(0,0,0,0.8);
}

/* Layout untuk Kontrol dan Pratinjau di dalam Modal */
.designer-layout {
    display: flex;
    gap: 2rem;
}

.designer-controls {
    flex: 1; /* Mengambil ruang yang tersedia */
}

.designer-preview {
    flex-basis: 300px; /* Memberi lebar tetap pada pratinjau */
    position: sticky; /* Membuat pratinjau tetap terlihat saat scroll */
    top: 2rem;
}

/* --- PERBAIKAN LAYOUT FORM --- */

/* Memberi jarak antar bagian form */
.input-section {
    margin-bottom: 2rem;
}

/* Mengatur setiap grup input (label + input) */
.input-group {
    display: flex;
    flex-direction: column;
    flex-grow: 1; /* Agar bisa mengisi ruang yang tersedia */
}

/* Mengatur layout untuk Judul dan tombol Desain Cover */
.title-container {
    display: flex;
    align-items: flex-end; /* Menyejajarkan input dan tombol di bagian bawah */
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* Mengatur layout untuk baris yang berisi beberapa opsi */
.option-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); /* Grid responsif */
    gap: 1.5rem;
}

/* Menghapus margin bawah pada bagian terakhir form agar rapi dengan tombol */
.input-section:last-of-type {
    margin-bottom: 0;
}

/* --- AKHIR PERBAIKAN LAYOUT FORM --- */

/* Preview Cover - Elegant Card */
.designer-preview .ebook-cover {
    border-radius: 15px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    position: relative;
    /* Kunci untuk posisi teks: jadikan flex container */
    display: flex;
    flex-direction: column;
    justify-content: center; /* Default di tengah */
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.designer-preview .ebook-cover::after {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(to right, rgba(255,255,255,0.1) 0%, transparent 10%, transparent 90%, rgba(0,0,0,0.2) 100%);
    pointer-events: none;
}

/* Kunci Perbaikan Popup */
.hidden {
    display: none !important;
}

#cover-modal:not(.hidden) {
    display: flex !important;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.modal-content {
    animation: fadeIn 0.4s ease-out;
}
/* Animasi Muncul untuk Konten Ebook */
.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Styling tambahan agar teks ebook terlihat rapi dan elegan */
#ebook-render h1, #ebook-render h2 {
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--text-main);
}

#ebook-render p {
    text-align: justify;
    margin-bottom: 1.2rem;
    color: var(--text-main);
    max-width: 100%; /* Agar tidak terbatas seperti p di header */
}

/* --- STYLING UNTUK INPUT FILE KUSTOM --- */
.file-input-hidden {
    display: none; /* Sembunyikan input file asli */
}

.file-input-label {
    display: inline-block; /* Agar bisa diberi padding dan margin */
    cursor: pointer;
    margin-bottom: 1rem; /* Beri jarak dengan input URL di bawahnya */
    width: 100%;
    text-align: center;
}

.file-input-label:hover {
    /* Gunakan efek hover yang sama dengan secondary-btn */
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

/* --- FOOTER STYLING --- */
.site-footer {
    text-align: center;
    padding: 1.5rem 1rem;
    margin-top: 2rem; /* Memberi jarak dari container utama */
    width: 100%;
}

.site-footer p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0; /* Menghapus margin bawah default dari paragraf */
}

.site-footer a {
    color: var(--accent-color); /* Menggunakan warna aksen untuk link */
    text-decoration: none;
    font-weight: 600;
}

.site-footer a:hover {
    text-decoration: underline;
}

/* --- RESPONSIVE UNTUK MOBILE --- */
@media (max-width: 768px) {
    .modal-overlay {
        /* Di mobile, biarkan modal mulai dari atas dan bisa di-scroll */
        align-items: flex-start;
        overflow-y: auto;
    }

    .designer-layout {
        /* Ubah tatanan menjadi vertikal di mobile */
        flex-direction: column;
    }

    .designer-preview {
        position: static; /* Matikan 'sticky' di mobile */
    }
}

/* --- LANDING PAGE STYLES --- */
.landing-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
    width: 100%;
    max-width: 1200px;
    min-height: 80vh;
}

.hero-section {
    padding-right: 2rem;
}

.hero-section .tagline {
    font-size: 1.2rem;
    line-height: 1.7;
    margin-bottom: 2rem;
}

.cta-button {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.4);
    border-radius: 50px; /* Pill shape */
    transition: all 0.3s ease;
}

.cta-button:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 20px 25px -5px rgba(99, 102, 241, 0.5);
}

.login-section {
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--shadow-xl);
}

.login-box h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-main);
    font-family: 'Montserrat', sans-serif;
}

.login-btn {
    width: 100%;
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 1rem;
    font-size: 1rem;
    font-weight: 600;
    margin-top: 1rem;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(99, 102, 241, 0.3);
}

.separator {
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--text-muted);
    margin: 1.5rem 0;
}

.separator::before, .separator::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--glass-border);
}

.separator:not(:empty)::before { margin-right: .5em; }
.separator:not(:empty)::after { margin-left: .5em; }

.google-btn {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    background: #fff;
    color: #333;
    border: 1px solid #ddd;
    padding: 0.75rem;
    font-weight: 600;
}

.google-btn:hover {
    background: #f7f7f7;
    transform: translateY(-2px);
}

.login-box .footer-text {
    font-size: 0.85rem;
    text-align: center;
    margin-top: 1.5rem;
    margin-bottom: 0;
}

.login-box .footer-text a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
}

.form-options {
    text-align: right;
    margin-top: -0.75rem;
    margin-bottom: 1.25rem;
}

.form-options a {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s ease;
}

.form-options a:hover {
    color: var(--accent-color);
}

@media (max-width: 992px) {
    .landing-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 3rem;
    }
    .hero-section {
        padding-right: 0;
    }
    .login-box {
        margin: 0 auto;
    }
}