/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-card: #252525;
    --bg-card-hover: #2d2d2d;
    
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --text-muted: #666666;
    
    --accent-primary: #ff6b35;
    --accent-secondary: #ff8f5a;
    --accent-gradient: linear-gradient(135deg, #ff6b35 0%, #f7931e 50%, #ff6b35 100%);
    
    --success: #4caf50;
    --warning: #ff9800;
    --danger: #f44336;
    
    --border-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: 16px;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    min-height: 100dvh;
    overflow-x: hidden;
    line-height: 1.5;
}

/* ===== App Container ===== */
.app-container {
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
    position: relative;
    background: var(--bg-primary);
}

/* ===== Header ===== */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(15, 15, 15, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 28px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== Navigation Tabs ===== */
.nav-tabs {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.nav-tabs::-webkit-scrollbar {
    display: none;
}

.nav-tab {
    flex: 1;
    min-width: 70px;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.nav-tab .tab-icon {
    font-size: 1.2rem;
}

.nav-tab:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.nav-tab.active {
    background: var(--accent-primary);
    color: white;
}

/* ===== Main Content ===== */
.main-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

/* ===== Screens ===== */
.screen {
    display: none;
    animation: fadeIn 0.3s ease;
}

.screen.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Home Screen ===== */
.filter-section {
    margin-bottom: 24px;
}

.filter-title {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-title .icon {
    font-size: 1rem;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.filter-chip {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.filter-chip:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-primary);
}

.filter-chip.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* Spicy Level Slider */
.spicy-slider-container {
    padding: 8px 0;
}

.spicy-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.spicy-slider {
    width: 100%;
    height: 8px;
    background: var(--bg-card);
    border-radius: 4px;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.spicy-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 8px var(--shadow-color);
}

.spicy-slider::-moz-range-thumb {
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.spicy-value {
    text-align: center;
    margin-top: 8px;
    font-size: 1.2rem;
}

/* ===== Roulette Button ===== */
.roulette-section {
    margin-top: 32px;
    text-align: center;
}

.roulette-btn {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--accent-gradient);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    box-shadow: 0 8px 32px rgba(255, 107, 53, 0.3);
}

.roulette-btn::before {
    content: '';
    position: absolute;
    inset: 4px;
    border-radius: 50%;
    background: var(--bg-primary);
    z-index: 1;
}

.roulette-btn::after {
    content: '';
    position: absolute;
    inset: 8px;
    border-radius: 50%;
    background: var(--accent-gradient);
    z-index: 2;
}

.roulette-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 40px rgba(255, 107, 53, 0.4);
}

.roulette-btn:active {
    transform: scale(0.98);
}

.roulette-btn.spinning {
    animation: spin 0.1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.roulette-content {
    position: absolute;
    inset: 12px;
    border-radius: 50%;
    background: var(--bg-secondary);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.roulette-icon {
    font-size: 3rem;
}

.roulette-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.candidate-count {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.candidate-count strong {
    color: var(--accent-primary);
}

/* ===== Result Screen ===== */
.result-container {
    text-align: center;
    padding: 20px 0;
}

.result-emoji {
    font-size: 4rem;
    margin-bottom: 16px;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.result-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    margin: 24px 0;
    position: relative;
    overflow: hidden;
}

.result-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--accent-gradient);
}

.result-name {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 12px;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.result-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 16px;
}

.result-tag {
    padding: 4px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.result-info {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.info-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.info-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.info-value {
    font-size: 1rem;
    font-weight: 500;
}

/* Result Actions */
.result-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 24px;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
}

.action-btn.primary {
    background: var(--accent-gradient);
    color: white;
}

.action-btn.secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-color);
}

.action-btn .icon {
    font-size: 1.1rem;
}

/* Similar Menus */
.similar-section {
    margin-top: 32px;
    text-align: left;
}

.similar-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-secondary);
}

.similar-menus {
    display: flex;
    gap: 12px;
    overflow-x: auto;
    padding-bottom: 8px;
    scrollbar-width: none;
}

.similar-menus::-webkit-scrollbar {
    display: none;
}

.similar-card {
    flex-shrink: 0;
    width: 120px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
}

.similar-card:hover {
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.similar-card .name {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 8px;
}

.similar-card .tag {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== Menu Management Screen ===== */
.menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.menu-title {
    font-size: 1.2rem;
    font-weight: 600;
}

.menu-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.add-menu-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.add-menu-btn:hover {
    transform: scale(1.02);
}

/* Menu List */
.menu-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.menu-item:hover {
    border-color: var(--accent-primary);
}

.menu-item.excluded {
    opacity: 0.5;
}

.menu-favorite {
    font-size: 1.3rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.menu-favorite:hover {
    transform: scale(1.2);
}

.menu-favorite.active {
    color: #ffc107;
}

.menu-info {
    flex: 1;
}

.menu-name {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 4px;
}

.menu-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.menu-meta-item {
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 2px 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
}

.menu-actions {
    display: flex;
    gap: 8px;
}

.menu-action-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.menu-action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

.menu-action-btn.delete:hover {
    background: var(--danger);
    border-color: var(--danger);
    color: white;
}

/* ===== Settings Screen ===== */
.settings-section {
    margin-bottom: 32px;
}

.settings-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.settings-title .icon {
    font-size: 1.2rem;
}

/* Toggle Switch */
.toggle-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    margin-bottom: 12px;
}

.toggle-label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toggle-label .title {
    font-size: 0.95rem;
    font-weight: 500;
}

.toggle-label .desc {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.toggle-switch {
    position: relative;
    width: 52px;
    height: 28px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    inset: 0;
    background: var(--bg-secondary);
    border-radius: 28px;
    transition: var(--transition-fast);
    border: 1px solid var(--border-color);
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    left: 2px;
    bottom: 2px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: var(--transition-fast);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
}

.toggle-switch input:checked + .toggle-slider::before {
    transform: translateX(24px);
    background: white;
}

/* History List */
.history-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
}

.history-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.history-menu {
    font-size: 0.95rem;
    font-weight: 500;
}

.history-clear-btn {
    padding: 8px 16px;
    background: var(--danger);
    border: none;
    border-radius: var(--radius-sm);
    color: white;
    font-size: 0.85rem;
    cursor: pointer;
    margin-top: 12px;
}

/* Excluded List */
.excluded-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.excluded-chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    font-size: 0.85rem;
}

.excluded-chip .remove {
    cursor: pointer;
    color: var(--text-muted);
    font-size: 1rem;
}

.excluded-chip .remove:hover {
    color: var(--danger);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.active {
    display: flex;
}

.modal {
    width: 100%;
    max-width: 400px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.9) translateY(20px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-card);
    border: none;
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 1.2rem;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    display: flex;
    gap: 12px;
    padding: 20px;
    border-top: 1px solid var(--border-color);
}

.modal-footer .btn {
    flex: 1;
    padding: 12px;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
}

.modal-footer .btn.cancel {
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal-footer .btn.confirm {
    background: var(--accent-gradient);
    color: white;
}

/* Form Elements */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.form-chip {
    padding: 8px 14px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-chip:hover {
    border-color: var(--accent-primary);
}

.form-chip.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
}

/* ===== Toast ===== */
.toast-container {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
}

.toast {
    padding: 12px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    box-shadow: 0 4px 20px var(--shadow-color);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s;
    border: 1px solid var(--border-color);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes toastOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(20px);
    }
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state .icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.empty-state .text {
    font-size: 0.95rem;
}

/* ===== Responsive ===== */
@media (max-width: 360px) {
    .filter-chip {
        padding: 6px 12px;
        font-size: 0.85rem;
    }
    
    .roulette-btn {
        width: 160px;
        height: 160px;
    }
    
    .roulette-icon {
        font-size: 2.5rem;
    }
    
    .result-name {
        font-size: 2rem;
    }
}

/* Safe Area for iOS */
@supports (padding: max(0px)) {
    .app-container {
        padding-bottom: max(0px, env(safe-area-inset-bottom));
    }
}