/* ========================================
   MOGAN — AI Document Forge
   Futuristic dark UI
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg:        #0a0a0f;
    --bg2:       #111118;
    --surface:   #16161f;
    --border:    #1e1e2a;
    --border-hl: #2a2a3a;
    --text:      #e4e4ec;
    --text2:     #8888a0;
    --accent:    #00e5c8;
    --accent2:   #6c5ce7;
    --accent3:   #ff7849;
    --glow:      rgba(0, 229, 200, 0.15);
    --radius:    12px;
    --font:      'Inter', -apple-system, sans-serif;
    --font-head: 'Space Grotesk', 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    perspective: 1px;
}

/* ===== PASSWORD GATE ===== */
.auth-gate {
    position: fixed; inset: 0;
    z-index: 9999;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg);
    backdrop-filter: blur(40px);
    transition: opacity 0.5s, visibility 0.5s;
}
.auth-gate.unlocked {
    opacity: 0; visibility: hidden;
    pointer-events: none;
}
.auth-card {
    text-align: center;
    padding: 3rem 2.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    min-width: 340px;
    animation: zoomFadeIn 0.6s ease-out;
}
.auth-logo {
    font-family: var(--font-head);
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 0.4rem;
}
.auth-sub {
    font-size: 0.85rem;
    color: var(--text2);
    margin-bottom: 1.8rem;
}
.auth-input-row {
    display: flex; gap: 8px;
}
.auth-input-row input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s;
}
.auth-input-row input:focus { border-color: var(--accent); }
.auth-input-row button {
    padding: 12px 16px;
    background: var(--accent);
    border: none;
    border-radius: 8px;
    color: var(--bg);
    cursor: pointer;
    transition: transform 0.2s, background 0.3s;
}
.auth-input-row button:hover { transform: scale(1.05); }
.auth-error {
    margin-top: 0.8rem;
    font-size: 0.8rem;
    color: var(--accent3);
}

/* ===== LOGO UPLOAD ===== */
.logo-upload-group { margin-top: 0.2rem; }
.logo-upload-group label .optional-tag {
    font-size: 0.75rem;
    color: var(--text2);
    font-weight: 400;
}
.logo-drop-zone {
    position: relative;
    border: 2px dashed var(--border);
    border-radius: 10px;
    padding: 1.4rem;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.3s, background 0.3s;
    background: var(--bg);
}
.logo-drop-zone:hover,
.logo-drop-zone.drag-over {
    border-color: var(--accent);
    background: var(--glow);
}
.logo-drop-zone input[type="file"] {
    position: absolute; inset: 0;
    opacity: 0; cursor: pointer;
    z-index: 2;
}
.drop-placeholder {
    display: flex; flex-direction: column;
    align-items: center; gap: 0.5rem;
    color: var(--text2);
    font-size: 0.82rem;
    pointer-events: none;
}
.drop-placeholder svg { opacity: 0.5; }
.logo-preview-wrap {
    position: relative;
    display: inline-block;
}
.logo-preview-wrap img {
    max-height: 64px;
    max-width: 200px;
    border-radius: 6px;
    object-fit: contain;
}
.logo-remove {
    position: absolute; top: -8px; right: -8px;
    width: 22px; height: 22px;
    border-radius: 50%;
    background: var(--accent3);
    color: #fff;
    border: none;
    font-size: 14px;
    line-height: 1;
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    z-index: 3;
}

a { color: var(--accent); text-decoration: none; }

::selection { background: var(--accent); color: var(--bg); }

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-hl); border-radius: 3px; }

/* --- NAV --- */
nav {
    position: fixed; top: 0; left: 0; right: 0;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 clamp(1.5rem, 4vw, 3rem);
    height: 64px;
    background: rgba(10, 10, 15, 0.7);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 100;
}

.logo {
    font-family: var(--font-head);
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 2px;
    color: var(--accent);
}

.nav-links { display: flex; gap: 2rem; }
.nav-links a {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text2);
    transition: color 0.3s;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }

.nav-status {
    display: flex; align-items: center; gap: 6px;
    font-size: 0.75rem; color: var(--text2);
}
.dot {
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}
.dot.offline { background: #ff4444; }

@keyframes pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 var(--glow); }
    50% { opacity: 0.7; box-shadow: 0 0 0 6px transparent; }
}

/* --- HERO --- */
#hero {
    position: relative;
    min-height: 100vh;
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    text-align: center;
    padding: 80px 2rem 2rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute; inset: -20%;
    background: url('assets/flowing-purple-mountain-spiral-bright-imagination-generated-by-ai_188544-9853.avif') center/cover no-repeat;
    opacity: 0.15;
    filter: blur(1px);
    will-change: transform;
    transition: transform 0.1s linear;
}

.hero-bg::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, var(--bg) 0%, transparent 30%, transparent 70%, var(--bg) 100%);
}

.hero-content {
    position: relative; z-index: 1;
    animation: heroZoomIn 1.2s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@keyframes heroZoomIn {
    from { opacity: 0; transform: scale(0.88) translateY(30px); filter: blur(6px); }
    to   { opacity: 1; transform: scale(1) translateY(0); filter: blur(0); }
}

.hero-content h1 {
    font-family: var(--font-head);
    font-size: clamp(3rem, 8vw, 6.5rem);
    font-weight: 700;
    line-height: 1.05;
    letter-spacing: -2px;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 50%, var(--accent3) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-sub {
    font-size: 1.1rem;
    color: var(--text2);
    margin-bottom: 2.5rem;
    letter-spacing: 0.5px;
}

.cta-btn {
    display: inline-flex; align-items: center; gap: 10px;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--accent), #00c4aa);
    color: var(--bg);
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 1px;
    border-radius: 50px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 229, 200, 0.3);
}

.hero-stats {
    position: relative; z-index: 1;
    display: flex; align-items: center; gap: 2rem;
    margin-top: 4rem;
    animation: fadeSlideUp 1s 0.5s cubic-bezier(0.16, 1, 0.3, 1) both;
}
.stat { text-align: center; }
.stat-num {
    display: block;
    font-family: var(--font-head);
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent);
}
.stat-label { font-size: 0.7rem; color: var(--text2); text-transform: uppercase; letter-spacing: 1px; }
.stat-divider { width: 1px; height: 30px; background: var(--border-hl); }

/* --- CREATE SECTION --- */
#create {
    position: relative;
    min-height: 100vh;
    padding: 6rem 2rem;
    display: flex; justify-content: center;
}

.section-bg {
    position: absolute; inset: -15%;
    background: url('assets/abstract-background-iridescent-holographic-foil-metallic-texture-ultraviolet-wavy-wallpaper-fluid-ripples-liquid-metal-surface-esoteric-aura-spectrum-bright-hue-colors-g.avif') center/cover no-repeat;
    opacity: 0.06;
    will-change: transform;
    transition: transform 0.1s linear;
}

.create-container {
    position: relative; z-index: 1;
    width: 100%; max-width: 720px;
}

.section-header { margin-bottom: 2.5rem; }
.section-tag {
    display: block;
    font-size: 0.7rem;
    color: var(--accent);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    font-family: var(--font-head);
}
.section-header h2 {
    font-family: var(--font-head);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 600;
    letter-spacing: -0.5px;
}

/* Type Cards */
.type-cards {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
    margin-bottom: 2rem;
}

.type-card {
    display: flex; flex-direction: column;
    align-items: center; gap: 8px;
    padding: 20px 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.8rem;
    color: var(--text2);
    letter-spacing: 0.5px;
}

.type-card .card-icon { color: var(--text2); transition: color 0.3s; }

.type-card:hover {
    border-color: var(--border-hl);
    background: var(--bg2);
}

.type-card.selected {
    border-color: var(--accent);
    background: rgba(0, 229, 200, 0.05);
    color: var(--text);
    box-shadow: 0 0 20px var(--glow);
}
.type-card.selected .card-icon { color: var(--accent); }

/* Form */
.form-area {
    display: flex; flex-direction: column; gap: 1.2rem;
}

.input-group { display: flex; flex-direction: column; gap: 6px; }

.input-group label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--text2);
}

.input-group input,
.input-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text);
    font-family: var(--font);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s, box-shadow 0.3s;
    resize: vertical;
}

.input-group input:focus,
.input-group textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--glow);
}

.input-group input::placeholder,
.input-group textarea::placeholder {
    color: var(--text2);
    opacity: 0.5;
}

.format-row {
    display: flex; align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 0.5rem;
}

.format-toggle { display: flex; gap: 6px; }

.fmt-btn {
    display: flex; align-items: center; gap: 6px;
    padding: 10px 18px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text2);
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all 0.3s;
}
.fmt-btn:hover { border-color: var(--border-hl); }
.fmt-btn.active {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(0, 229, 200, 0.05);
}

.generate-btn {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 28px;
    background: linear-gradient(135deg, var(--accent), #00c4aa);
    color: var(--bg);
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 0.9rem;
    letter-spacing: 0.5px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s, opacity 0.3s;
}
.generate-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 25px rgba(0, 229, 200, 0.3);
}
.generate-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.spinner { animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }

/* --- PREVIEW SECTION --- */
#preview-section {
    min-height: 60vh;
    padding: 4rem 2rem 6rem;
    display: flex; justify-content: center;
}

.preview-container {
    width: 100%; max-width: 720px;
}

.preview-area {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    min-height: 400px;
    padding: 2rem;
    margin-bottom: 1.5rem;
    overflow-y: auto;
    max-height: 70vh;
}

.preview-empty {
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    gap: 1rem;
    height: 350px;
    color: var(--text2);
    opacity: 0.4;
}
.preview-empty p { font-size: 0.85rem; }

/* Preview rendered content */
.preview-doc { color: var(--text); padding: 0.5rem 0; }
.preview-doc h1 {
    font-family: var(--font-head);
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.2rem;
    color: var(--accent);
    border-bottom: 2px solid var(--border-hl);
    padding-bottom: 0.7rem;
}
.preview-doc h2 {
    font-family: var(--font-head);
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 1.6rem 0 0.4rem;
    color: var(--text);
    padding-left: 0.6rem;
    border-left: 3px solid var(--accent);
}
.preview-doc h3 {
    font-family: var(--font-head);
    font-size: 0.95rem;
    font-weight: 600;
    margin: 1.2rem 0 0.3rem;
    color: var(--text2);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.preview-doc hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: 1.2rem 0;
}
.preview-doc p {
    font-size: 0.9rem;
    color: var(--text2);
    margin-bottom: 0.6rem;
    line-height: 1.7;
}
.preview-doc strong {
    color: var(--text);
    font-weight: 600;
}

/* Invoice / data table in preview */
.preview-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.85rem;
}
.preview-table th {
    text-align: left;
    padding: 0.6rem 0.8rem;
    font-family: var(--font-head);
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text2);
    border-bottom: 2px solid var(--border-hl);
    background: var(--surface);
}
.preview-table td {
    padding: 0.5rem 0.8rem;
    color: var(--text);
    border-bottom: 1px solid var(--border);
}
.preview-table tr:last-child td {
    border-bottom: none;
}
.preview-table tr:hover td {
    background: rgba(255,255,255,0.02);
}

.download-bar {
    display: flex; gap: 12px;
}

.dl-btn {
    display: flex; align-items: center; gap: 8px;
    padding: 12px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
}
.dl-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 15px var(--glow);
}

/* --- CHAT WIDGET --- */
.chat-widget {
    position: fixed;
    bottom: 24px; right: 24px;
    z-index: 200;
}

.chat-toggle {
    width: 52px; height: 52px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    border: none;
    color: var(--bg);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 20px rgba(0, 229, 200, 0.3);
    transition: transform 0.3s;
}
.chat-toggle:hover { transform: scale(1.08); }

.chat-panel {
    display: none;
    position: absolute;
    bottom: 64px; right: 0;
    width: 340px;
    max-height: 440px;
    background: var(--bg2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    flex-direction: column;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}
.chat-panel.open { display: flex; }

.chat-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    font-family: var(--font-head);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: 1px;
}
.chat-dot {
    width: 8px; height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.chat-messages {
    flex: 1;
    padding: 12px;
    overflow-y: auto;
    display: flex; flex-direction: column; gap: 8px;
    max-height: 300px;
}

.msg {
    padding: 10px 14px;
    border-radius: 10px;
    font-size: 0.82rem;
    line-height: 1.5;
    max-width: 85%;
}
.msg.bot {
    background: var(--surface);
    color: var(--text2);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}
.msg.user {
    background: rgba(0, 229, 200, 0.12);
    color: var(--text);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-input-row {
    display: flex;
    border-top: 1px solid var(--border);
}
.chat-input-row input {
    flex: 1;
    padding: 12px 14px;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: 0.82rem;
    outline: none;
}
.chat-input-row input::placeholder { color: var(--text2); opacity: 0.5; }
.chat-input-row button {
    padding: 12px 14px;
    background: transparent;
    border: none;
    color: var(--accent);
    cursor: pointer;
    transition: opacity 0.3s;
}
.chat-input-row button:hover { opacity: 0.7; }

/* --- FOOTER --- */
footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--border);
    font-size: 0.75rem;
    color: var(--text2);
    letter-spacing: 1px;
}
.footer-sep { margin: 0 8px; opacity: 0.3; }

/* --- TOAST --- */
.toast {
    position: fixed;
    bottom: 90px; left: 50%;
    transform: translateX(-50%) translateY(20px);
    padding: 12px 24px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 0.82rem;
    color: var(--text);
    opacity: 0;
    transition: all 0.4s;
    z-index: 300;
    pointer-events: none;
}
.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}
.toast.error { border-color: #ff4444; color: #ff6b6b; }
.toast.success { border-color: var(--accent); color: var(--accent); }

/* --- SCROLL ANIMATIONS --- */
@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(40px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes zoomFadeIn {
    from { opacity: 0; transform: scale(0.92); }
    to   { opacity: 1; transform: scale(1); }
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-40px); }
    to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}

/* Elements hidden until scrolled into view */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-zoom {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.reveal-zoom.visible {
    opacity: 1;
    transform: scale(1);
}

.reveal-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-left.visible { opacity: 1; transform: translateX(0); }

.reveal-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1),
                transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal-right.visible { opacity: 1; transform: translateX(0); }

/* Stagger delays for child elements */
.stagger-1 { transition-delay: 0.05s; }
.stagger-2 { transition-delay: 0.1s; }
.stagger-3 { transition-delay: 0.15s; }
.stagger-4 { transition-delay: 0.2s; }
.stagger-5 { transition-delay: 0.25s; }

/* Nav shrink on scroll */
nav.scrolled {
    height: 52px;
    background: rgba(10, 10, 15, 0.92);
    border-bottom-color: var(--border-hl);
}
nav { transition: height 0.3s, background 0.3s; }

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
    .reveal, .reveal-zoom, .reveal-left, .reveal-right { opacity: 1; transform: none; }
}

/* --- RESPONSIVE --- */
@media (max-width: 600px) {
    .nav-links { display: none; }
    .type-cards { grid-template-columns: repeat(3, 1fr); }
    .format-row { flex-direction: column; align-items: stretch; }
    .format-toggle { justify-content: center; }
    .generate-btn { width: 100%; justify-content: center; }
    .download-bar { flex-direction: column; }
    .chat-panel { width: calc(100vw - 48px); right: -12px; }
    .hero-content h1 { letter-spacing: -1px; }
}