/*
 * ElizAI v4.5 "Oasis" - Hlavní Stylový Soubor
 * Verze: 3.3 - Definitivní finální verze
*/

/* --- 1. KOŘENOVÉ PROMĚNNÉ A BAREVNÉ REŽIMY --- */
:root {
    --font-main: 'Roboto', sans-serif;
    --font-heading: 'Exo 2', sans-serif;
    --transition-speed-fast: 0.2s;
    --transition-speed-normal: 0.4s;
    --transition-cubic: cubic-bezier(0.645, 0.045, 0.355, 1);
    --border-radius-small: 8px;
    --border-radius-large: 16px;
    --touch-target-size: 44px;
}
body.dark-mode {
    --bg-gradient-start: #0D1117;
    --bg-gradient-end: #000000;
    --card-bg: rgba(22, 27, 34, 0.75);
    --card-border: rgba(139, 148, 158, 0.2);
    --accent-primary: #00F7FF;
    --accent-glow: rgba(0, 247, 255, 0.15);
    --text-primary: #E6EDF3;
    --text-secondary: #8B949E;
    --text-headings: #FFFFFF;
    --btn-primary-bg: var(--accent-primary);
    --btn-primary-text: #0D1117;
    --btn-secondary-bg: transparent;
    --btn-secondary-text: var(--accent-primary);
    --btn-secondary-border: var(--accent-primary);
}
body.light-mode {
    --bg-gradient-start: #FFFFFF;
    --bg-gradient-end: #F0F2F5;
    --card-bg: rgba(255, 255, 255, 0.8);
    --card-border: rgba(0, 0, 0, 0.1);
    --accent-primary: #007BFF;
    --accent-glow: rgba(0, 123, 255, 0.15);
    --text-primary: #24292E;
    --text-secondary: #586069;
    --text-headings: #000000;
    --btn-primary-bg: var(--accent-primary);
    --btn-primary-text: #FFFFFF;
    --btn-secondary-bg: transparent;
    --btn-secondary-text: var(--accent-primary);
    --btn-secondary-border: var(--accent-primary);
}

/* --- 2. GLOBÁLNÍ RESET A POZADÍ --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-main);
    color: var(--text-primary);
    background-color: var(--bg-gradient-end);
    background-image: radial-gradient(ellipse at 50% 50%, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color var(--transition-speed-normal), color var(--transition-speed-normal);
}
.background-grid { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background-image: linear-gradient(rgba(139, 148, 158, 0.05) 1px, transparent 1px), linear-gradient(90deg, rgba(139, 148, 158, 0.05) 1px, transparent 1px); background-size: 30px 30px; z-index: -2; }
.background-blobs { position: fixed; top: 0; left: 0; width: 100%; height: 100%; overflow: hidden; z-index: -1; }
.blob { position: absolute; border-radius: 50%; opacity: 0.5; filter: blur(100px); will-change: transform; transition: background-color 2s; }
.blob1 { width: 400px; height: 400px; background: rgba(0, 123, 255, 0.5); top: -150px; left: -150px; animation: move 25s infinite alternate; }
.blob2 { width: 500px; height: 500px; background: rgba(0, 247, 255, 0.4); bottom: -200px; right: -200px; animation: move 30s infinite alternate-reverse; }
@keyframes move { from { transform: translate(0, 0) scale(1); } to { transform: translate(100px, 200px) scale(1.2); } }

/* --- 3. TYPOGRAFIE A ZÁKLADNÍ KOMPONENTY --- */
h1, h2, h3, h4, h5, h6 { font-family: var(--font-heading); color: var(--text-headings); margin-bottom: 1rem; }
h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); text-align: center; }
p { font-size: clamp(1rem, 1.5vw, 1.1rem); line-height: 1.6; color: var(--text-secondary); }
a { color: var(--accent-primary); text-decoration: none; transition: color var(--transition-speed-fast); }
a:hover { color: var(--text-headings); }
i { text-shadow: 0 0 5px rgba(0, 0, 0, 0.5); }
.btn { display: inline-block; padding: 12px 24px; border-radius: var(--border-radius-small); font-family: var(--font-heading); font-weight: 700; text-align: center; cursor: pointer; border: 2px solid transparent; transition: all var(--transition-speed-fast) ease-in-out; }
.btn-primary, .btn-cta { background-color: var(--btn-primary-bg); color: var(--btn-primary-text); }
.btn-primary:hover, .btn-cta:hover { transform: scale(1.05); box-shadow: 0 0 20px var(--accent-glow); }
.btn-secondary { background-color: var(--btn-secondary-bg); color: var(--btn-secondary-text); border-color: var(--btn-secondary-border); }
.btn-secondary:hover { background-color: var(--accent-primary); color: var(--btn-primary-text); }
.floating-window { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--border-radius-large); box-shadow: 0 8px 32px 0 rgba(0,0,0,0.1); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); transition: background-color var(--transition-speed-normal), border var(--transition-speed-normal); }
.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.7); display: flex; justify-content: center; align-items: center; z-index: 2000; opacity: 0; visibility: hidden; transition: all var(--transition-speed-normal) var(--transition-cubic); }
.modal-overlay.visible { opacity: 1; visibility: visible; }
.modal-window { width: 90%; max-width: 600px; max-height: 90vh; overflow-y: auto; transform: scale(0.9); transition: transform var(--transition-speed-normal) var(--transition-cubic); padding: 2rem; }
.modal-overlay.visible .modal-window { transform: scale(1); }
.modal-close { position: absolute; top: 15px; right: 15px; background: none; border: none; font-size: 2rem; color: var(--text-secondary); cursor: pointer; }
input, textarea, select { width: 100%; padding: 12px; margin-bottom: 1rem; background-color: rgba(0,0,0,0.2); border: 1px solid var(--card-border); border-radius: var(--border-radius-small); color: var(--text-primary); font-family: var(--font-main); }
body.light-mode input, body.light-mode textarea, body.light-mode select { background-color: rgba(0,0,0,0.05); }
.modal-switch-link { text-align: center; margin-top: 1rem; font-size: 0.9rem; color: var(--text-secondary); }

/* --- 4. HLAVIČKA A NAVIGACE --- */
.main-header { padding: 1rem 5%; position: sticky; top: 0; z-index: 100; background: rgba(13, 17, 23, 0.5); backdrop-filter: blur(10px); }
body.light-mode .main-header { background: rgba(255, 255, 255, 0.5); }
.navbar { display: flex; justify-content: space-between; align-items: center; }
.logo { font-family: var(--font-heading); font-size: 1.5rem; }
.logo span { color: var(--accent-primary); font-size: 1rem; }
.header-controls { display: flex; align-items: center; gap: 0.5rem; }
.icon-btn { background: none; border: none; color: var(--text-primary); font-size: 1.2rem; cursor: pointer; padding: 0.5rem; min-width: var(--touch-target-size); min-height: var(--touch-target-size); display: flex; justify-content: center; align-items: center;}
body.light-mode .theme-icon-moon { display: none; }
body.dark-mode .theme-icon-sun { display: none; }
.hamburger { display: block; background: none; border: none; color: var(--text-primary); font-size: 1.5rem; z-index: 1001; cursor: pointer; }
.nav-links { display: none; }
.nav-links.mobile-active { display: flex; flex-direction: column; position: absolute; top: 75px; left: 0; width: 100%; background: var(--bg-gradient-start); z-index: 1000; border-bottom: 1px solid var(--card-border); }
.nav-links a { padding: 1rem; text-align: center; border-bottom: 1px solid var(--card-border); }
.nav-links a:last-child { border-bottom: none; }
.nav-actions { display: none; }

/* --- 5. OBSAHOVÉ SEKCE (LANDING PAGE) --- */
.hero-section { min-height: 80vh; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; padding: 0 5%; }
.hero-section .subtitle { max-width: 600px; margin: 1rem auto 2rem; }
.content-section { padding: 4rem 5%; }
.features-grid { display: grid; gap: 1.5rem; margin-top: 2rem; }
.feature-card { padding: 2rem; text-align: center; }
.feature-card i { font-size: 2.5rem; color: var(--accent-primary); margin-bottom: 1rem; }
.steps-container { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-top: 3rem; text-align: center; }
.step-card { padding: 2rem; }
.step-card .step-number { width: 50px; height: 50px; line-height: 50px; border: 2px solid var(--accent-primary); border-radius: 50%; margin: 0 auto 1.5rem auto; font-family: var(--font-heading); font-size: 1.5rem; }
.pricing-grid { display: grid; grid-template-columns: 1fr; gap: 2rem; margin-top: 3rem; }
.pricing-card { padding: 2rem; display: flex; flex-direction: column; position: relative; overflow: hidden; }
.pricing-card .price { font-size: 2.5rem; font-family: var(--font-heading); margin-bottom: 1.5rem; }
.pricing-card .price span { font-size: 1rem; color: var(--text-secondary); font-family: var(--font-main); margin-left: 0.5rem;}
.pricing-card ul { list-style: none; margin-bottom: 2rem; flex-grow: 1; text-align: left; }
.pricing-card ul li { display: flex; align-items: center; gap: 1rem; margin-bottom: 1rem; }
.pricing-card ul li i.fa-check { color: #28a745; }
.pricing-card ul li i.fa-times { color: #dc3545; }
.recommended-badge { position: absolute; top: 25px; right: -35px; background-color: var(--accent-primary); color: var(--btn-primary-text); padding: 0.5rem 3rem; transform: rotate(45deg); font-size: 0.9rem; font-weight: bold; }
.faq-container { max-width: 800px; margin: 3rem auto 0 auto; display: grid; gap: 1rem; }
.faq-item { padding: 0; }
.faq-item summary { padding: 1.5rem; font-weight: bold; cursor: pointer; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::after { content: '\\f078'; font-family: 'Font Awesome 6 Free'; font-weight: 900; transition: transform var(--transition-speed-fast); }
.faq-item[open] summary::after { transform: rotate(180deg); }
.faq-item p { padding: 0 1.5rem 1.5rem 1.5rem; }
.logos-container { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 3rem; margin-top: 2rem; filter: grayscale(1) opacity(0.6); }
body.light-mode .logos-container { filter: grayscale(0) opacity(0.8); }
.logos-container span { font-size: 1.5rem; font-family: var(--font-heading); }
.main-footer { text-align: center; padding: 2rem 5%; border-top: 1px solid var(--card-border); margin-top: 2rem; }
.language-switcher { margin-bottom: 1rem; }
.language-switcher a { margin: 0 0.5rem; }

/* --- 6. APLIKACE (app/app.html) --- */
body.app-body { overflow: hidden; }
#preloader { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: var(--bg-gradient-end); z-index: 9999; display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 1rem; }
.loader-circle { width: 80px; height: 80px; border: 5px solid var(--card-border); border-top-color: var(--accent-primary); border-radius: 50%; animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.loader-percentage { font-family: var(--font-heading); font-size: 1.5rem; }
.app-container { display: flex; height: 100vh; }
.sidebar { position: fixed; left: -280px; top: 0; width: 280px; height: 100%; display: flex; flex-direction: column; background: var(--card-bg); backdrop-filter: blur(15px); border-right: 1px solid var(--card-border); transition: left var(--transition-speed-normal) var(--transition-cubic), width var(--transition-speed-normal) var(--transition-cubic); z-index: 1001; }
.sidebar.open { left: 0; }
.sidebar-header, .sidebar-footer, .main-nav { padding: 1.5rem; flex-shrink: 0; }
.main-nav { flex-grow: 1; overflow-y: auto; overflow-x: hidden; }
.nav-item { display: flex; align-items: center; padding: 1rem; margin-bottom: 0.5rem; border-radius: var(--border-radius-small); transition: background-color var(--transition-speed-fast), color var(--transition-speed-fast); cursor: pointer; overflow: hidden; white-space: nowrap; }
.nav-item i { width: 30px; margin-right: 1rem; font-size: 1.2rem; flex-shrink: 0; text-align: center; }
.nav-item .nav-text { opacity: 1; transition: opacity 0.2s; }
.nav-item:hover { background: var(--accent-primary); color: var(--btn-primary-text); }
.nav-item.active { background: var(--accent-primary); color: var(--btn-primary-text); font-weight: bold; }
.sidebar-footer { margin-top: auto; }
#sidebar-toggle { display: none; margin-left: auto; transition: transform 0.4s; }
.sidebar.collapsed { width: 80px; }
.sidebar.collapsed .logo span, .sidebar.collapsed .nav-text { opacity: 0; pointer-events: none; }
.sidebar.collapsed .nav-item { justify-content: center; padding-left: 0; padding-right: 0; }
.sidebar.collapsed .nav-item i { margin-right: 0; }
.sidebar.collapsed #sidebar-toggle i { transform: rotate(180deg); }
.main-content { width: 100%; height: 100%; display: flex; flex-direction: column; }
.app-header { display: flex; justify-content: space-between; align-items: center; padding: 0.5rem 1rem; background: rgba(13, 17, 23, 0.5); backdrop-filter: blur(10px); position: sticky; top: 0; z-index: 1000; border-bottom: 1px solid var(--card-border); }
body.light-mode .app-header { background: rgba(255,255,255,0.5); }
.hamburger-app { display: block; }
.user-menu { display: flex; align-items: center; gap: 0.5rem; }
.user-avatar-placeholder { width: 40px; height: 40px; border-radius: 50%; background-color: var(--card-border); display: flex; justify-content: center; align-items: center; font-size: 1.2rem; color: var(--text-secondary); cursor: pointer; }
.avatar-menu-wrapper { position: relative; }
.dropdown-menu { display: none; position: absolute; top: 120%; right: 0; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--border-radius-small); box-shadow: 0 8px 16px rgba(0,0,0,0.2); z-index: 1001; min-width: 150px; }
.dropdown-menu.visible { display: block; }
.dropdown-menu a { display: block; padding: 0.75rem 1rem; color: var(--text-primary); }
.dropdown-menu a:hover { background-color: var(--card-border); }
#app-main { padding: 1.5rem; flex-grow: 1; display: flex; flex-direction: column; overflow-y: auto; }
.app-view { display: none; height: 100%; flex-direction: column; }
.app-view.active { display: flex; animation: fadeIn 0.5s; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.dashboard-grid { display: grid; grid-template-columns: 1fr; gap: 1.5rem; }
.grid-item { min-height: 160px; padding: 1.5rem; display: flex; flex-direction: column; }
.stat-card { flex-direction: row; align-items: center; gap: 1.5rem; }
.stat-card i { font-size: 2.5rem; color: var(--accent-primary); }
.stat-content { display: flex; flex-direction: column; }
.stat-value { font-size: 2rem; font-family: var(--font-heading); }
.stat-label { font-size: 1rem; color: var(--text-secondary); }
.fab { position: fixed; bottom: 20px; right: 20px; width: 60px; height: 60px; border-radius: 50%; background-color: var(--accent-primary); color: var(--btn-primary-text); display: flex; justify-content: center; align-items: center; font-size: 1.5rem; border: none; box-shadow: 0 4px 15px rgba(0,0,0,0.3); z-index: 1000; cursor: pointer; }
.page-wrapper { flex-grow: 1; padding: 1.5rem; display: flex; flex-direction: column; }
.page-wrapper textarea { flex-grow: 1; resize: none; border: none; background: transparent; color: var(--text-primary); margin-top: 1rem; }
.admin-wrapper { flex-grow: 1; padding: 1.5rem; display: flex; flex-direction: column; }
.admin-tabs { display: flex; flex-wrap: wrap; gap: 0.5rem; border-bottom: 1px solid var(--card-border); margin-bottom: 1.5rem; }
.admin-tab { padding: 0.75rem 1.5rem; cursor: pointer; border-bottom: 2px solid transparent; }
.admin-tab.active { color: var(--accent-primary); border-bottom-color: var(--accent-primary); }
.admin-content { flex-grow: 1; }
.admin-tab-content { display: none; }
.admin-tab-content.active { display: block; }
.chat-container { display: flex; gap: 1.5rem; height: 100%; }
.chat-main-panel { flex-grow: 1; display: flex; flex-direction: column; }
.chat-full-page { display: flex; flex-direction: column; height: 100%; padding: 1.5rem; flex-grow: 1; }
.chat-wrapper { display: flex; flex-direction: column; height: 100%; flex-grow: 1; margin-top: 1rem; }
.chat-history { flex-grow: 1; overflow-y: auto; padding-right: 1rem; display: flex; flex-direction: column; gap: 1rem; }
.chat-message { position: relative; padding: 0.75rem 1rem; border-radius: var(--border-radius-large); max-width: 80%; line-height: 1.5; }
.favorite-btn { position: absolute; top: 5px; right: 5px; background: none; border: none; color: var(--text-secondary); cursor: pointer; opacity: 0; transition: opacity var(--transition-speed-fast); }
.chat-message:hover .favorite-btn { opacity: 1; }
.favorite-btn .fas { color: yellow; }
.bot-message { background-color: var(--card-border); align-self: flex-start; border-bottom-left-radius: var(--border-radius-small); }
.user-message { background-color: var(--accent-primary); color: var(--btn-primary-text); align-self: flex-end; border-bottom-right-radius: var(--border-radius-small); }
.chat-input-form { display: flex; align-items: flex-end; gap: 0.5rem; padding-top: 1rem; border-top: 1px solid var(--card-border); }
.chat-input-container { flex-grow: 1; display: flex; flex-direction: column; background-color: rgba(0,0,0,0.2); border-radius: var(--border-radius-large); padding: 0.5rem; }
.chat-input-form textarea { width: 100%; border: none; background: transparent; padding: 0.5rem; resize: none; max-height: 150px; overflow-y: auto; color: var(--text-primary); margin-bottom: 0; }
.chat-input-form textarea:focus { outline: none; }
#file-pills-container { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.5rem; }
.file-pill { display: flex; align-items: center; gap: 0.5rem; background-color: var(--card-border); padding: 0.25rem 0.75rem; border-radius: 20px; font-size: 0.9rem; }
.remove-pill-btn { background: none; border: none; color: var(--text-secondary); cursor: pointer; padding: 0; font-size: 1rem; min-width: auto; min-height: auto; }
.attachment-wrapper { position: relative; display: flex; align-items: center; }
.attachment-btn { border-radius: 50%; background-color: var(--card-border); }
.attachment-menu { position: absolute; bottom: 120%; left: 0; display: flex; flex-direction: column; gap: 0.5rem; background-color: var(--card-bg); border: 1px solid var(--card-border); border-radius: var(--border-radius-large); padding: 0.5rem; box-shadow: 0 4px 15px rgba(0,0,0,0.3); opacity: 0; visibility: hidden; transform: translateY(10px); transition: all var(--transition-speed-fast) ease-in-out; }
.attachment-menu.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.workflow-editor-wrapper { display: flex; gap: 1.5rem; height: 100%; }
#workflow-nodes-panel { flex: 0 0 250px; padding: 1rem; }
.workflow-node { background-color: var(--card-border); padding: 1rem; border-radius: var(--border-radius-small); margin-bottom: 1rem; cursor: grab; }
.workflow-node:active { cursor: grabbing; }
#workflow-canvas { flex-grow: 1; padding: 2rem; display: flex; flex-direction: column; gap: 1rem; }
.canvas-placeholder { margin: auto; text-align: center; color: var(--text-secondary); }
.dropped-node { background-color: var(--accent-primary); color: var(--btn-primary-text); padding: 1.5rem; border-radius: var(--border-radius-small); }
.image-generator-wrapper { flex-grow: 1; padding: 2rem; }
.image-generator-layout { display: grid; grid-template-columns: 1fr; gap: 2rem; height: 100%; }
.image-generator-form { display: flex; flex-direction: column; gap: 1rem; }
.aspect-ratio-selector { display: flex; gap: 1rem; }
.aspect-ratio-btn { flex-grow: 1; padding: 1rem; background-color: var(--card-border); border: none; color: var(--text-primary); border-radius: var(--border-radius-small); cursor: pointer; transition: background-color var(--transition-speed-fast); }
.aspect-ratio-btn.active { background-color: var(--accent-primary); color: var(--btn-primary-text); }
.image-result-area { display: flex; justify-content: center; align-items: center; background-color: rgba(0,0,0,0.2); border-radius: var(--border-radius-large); min-height: 200px;}
.result-placeholder { text-align: center; color: var(--text-secondary); }
.result-placeholder i { font-size: 4rem; }
.floating-panel { position: fixed; top: 50%; left: 50%; transform: translate(-50%, -50%) scale(0.95); width: 90%; max-width: 600px; max-height: 80vh; z-index: 1050; opacity: 0; visibility: hidden; transition: all var(--transition-speed-normal) var(--transition-cubic); display: flex; flex-direction: column; padding: 1.5rem; }
.floating-panel.visible { opacity: 1; visibility: visible; transform: translate(-50%, -50%) scale(1); }
.panel-close { position: absolute; top: 10px; right: 15px; background: none; border: none; font-size: 2rem; color: var(--text-secondary); cursor: pointer; }
.file-list { display: flex; flex-direction: column; gap: 1rem; margin-top: 1rem; }
.file-item { display: flex; justify-content: space-between; align-items: center; background: var(--card-border); padding: 0.75rem 1rem; border-radius: var(--border-radius-small); }
.delete-btn { color: #dc3545; }
.favorite-list { margin-top: 1rem; }

/* --- 7. RESPONZIVITA --- */
@media (max-width: 1199px) {
    .chat-side-panel { display: none; }
}
@media (min-width: 768px) {
    .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
    .features-grid { grid-template-columns: repeat(3, 1fr); }
    .steps-container { grid-template-columns: repeat(3, 1fr); }
    .pricing-grid { grid-template-columns: repeat(2, 1fr); }
    .image-generator-layout { grid-template-columns: 1fr 1fr; }
}
@media (min-width: 1024px) {
    .hamburger { display: none; }
    .nav-links { display: flex; flex-direction: row; position: static; width: auto; background: none; border: none; padding: 0; gap: 2.5rem; }
    .nav-links a { padding: 0; border: none; }
    .nav-actions { display: flex; flex-direction: row; align-items: center; gap: 1rem; }
    .header-controls { gap: 2rem; }
    .pricing-grid { grid-template-columns: repeat(3, 1fr); }
    .hamburger-app { display: none; }
    .sidebar { position: static; flex-shrink: 0; }
    .main-content { flex-grow: 1; overflow-y: auto; }
    #app-main { padding: 2rem; }
    .dashboard-grid { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
    .fab { display: none; }
    #sidebar-toggle { display: flex; }
}