:root {
    --accent-color: #EA580C;
    --bg-primary: #000000;
    --bg-secondary: #1C1C1E;
    --bg-card: rgba(255, 255, 255, 0.15);
    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.6);
    --border-color: rgba(255, 255, 255, 0.2);
    --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Montserrat Alternates', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--accent-color) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

#app {
    min-height: 100vh;
    padding-bottom: 80px;
}

.page {
    display: none;
    min-height: calc(100vh - 80px);
    padding: 20px;
    animation: fadeIn 0.3s ease;
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
}

.page.active {
    display: block;
}

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

.landing-hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 40px 20px;
}

.landing-content {
    max-width: 1200px;
    width: 100%;
    text-align: center;
}

.landing-title {
    font-size: 72px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.landing-subtitle {
    font-size: 24px;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

.landing-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
    min-width: 200px;
}

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

.btn-secondary:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-color);
}

.landing-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 60px;
}

.feature-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 40px 30px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

.feature-icon i {
    font-size: 48px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 14px;
}

.auth-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 10px 40px var(--shadow);
}

.auth-title {
    font-size: 32px;
    margin-bottom: 30px;
    text-align: center;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.input-text,
input[type="text"],
input[type="email"],
input[type="password"] {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-size: 16px;
    font-family: inherit;
    transition: border-color 0.3s ease;
}

.input-text:focus,
input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus {
    outline: none;
    border-color: var(--accent-color);
}

.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

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

.btn-primary:hover {
    background: color-mix(in srgb, var(--accent-color) 90%, black);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(234, 88, 12, 0.4);
}

.btn-danger {
    background: #FF3B30;
    color: white;
}

.btn-danger:hover {
    background: #FF2D20;
}

.auth-switch {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 10px;
}

.auth-switch a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.auth-switch a:hover {
    text-decoration: underline;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dashboard-header h1 {
    font-size: 36px;
    font-weight: 700;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar-small {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--accent-color);
    object-fit: cover;
    display: block;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 20px;
}

.dashboard-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 30px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dashboard-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow);
    border-color: var(--accent-color);
}

.card-icon {
    font-size: 40px;
    margin-bottom: 15px;
    color: var(--accent-color);
}

.card-icon i {
    font-size: 40px;
}

.dashboard-card h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.dashboard-card p {
    font-size: 24px;
    font-weight: 600;
    color: var(--accent-color);
}

.section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
}

.section-header h1 {
    font-size: 36px;
    font-weight: 700;
}

.back-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
}

.back-btn:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-color);
}

.section-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.add-item-form {
    display: flex;
    gap: 12px;
}

.add-item-form .input-text {
    flex: 1;
}

.items-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.item-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.item-card:hover {
    border-color: var(--accent-color);
    transform: translateX(5px);
}

.item-card.completed {
    opacity: 0.6;
}

.item-info {
    flex: 1;
}

.item-title {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 4px;
}

.item-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
}

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

.icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    min-height: 36px;
}

.icon-btn i {
    font-size: 16px;
}

.icon-btn:hover {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.finance-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.summary-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
}

.summary-card h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.summary-card p {
    font-size: 28px;
    font-weight: 700;
}

.summary-card.income p {
    color: #34C759;
}

.summary-card.expense p {
    color: #FF3B30;
}

.settings-section {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 20px;
}

.settings-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
}

.color-presets {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
    gap: 12px;
}

.color-preset {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    cursor: pointer;
    border: 3px solid transparent;
    transition: all 0.3s ease;
}

.color-preset:hover {
    transform: scale(1.1);
}

.color-preset.active {
    border-color: var(--text-primary);
    box-shadow: 0 0 0 3px var(--bg-primary);
}

.bottom-menu {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 600px;
    background: rgba(28, 28, 30, 0.98);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    border-top: 1px solid var(--border-color);
    border-radius: 24px 24px 0 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 16px 8px calc(16px + env(safe-area-inset-bottom, 0px));
    z-index: 1000;
    box-shadow: 0 -8px 32px rgba(0, 0, 0, 0.4);
    gap: 4px;
}

.bottom-menu.hidden {
    display: none !important;
}

.menu-item.menu-auth {
    display: flex;
}

.menu-item.menu-user {
    display: none;
}

.bottom-menu.authenticated .menu-item.menu-auth {
    display: none;
}

.bottom-menu.authenticated .menu-item.menu-user {
    display: flex;
}

@media (max-width: 480px) {
    .menu-label {
        display: none;
    }
    
    .menu-item {
        min-width: 48px;
        padding: 10px 8px;
    }
}

.menu-item {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 12px;
    border-radius: 16px;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: inherit;
    min-width: 64px;
    position: relative;
    overflow: hidden;
}

.menu-item::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0);
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 16px;
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
}

.menu-item:hover::before {
    transform: translate(-50%, -50%) scale(1);
}

.menu-item:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.menu-item.active {
    color: var(--accent-color);
    background: color-mix(in srgb, var(--accent-color) 14%, transparent);
}

.menu-item.active::before {
    background: color-mix(in srgb, var(--accent-color) 18%, transparent);
    transform: translate(-50%, -50%) scale(1);
}

.menu-item:active {
    transform: translateY(0) scale(0.95);
}

.menu-icon {
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    position: relative;
    z-index: 1;
    transition: transform 0.25s ease;
}

.menu-item:hover .menu-icon {
    transform: scale(1.1);
}

.menu-item.active .menu-icon {
    transform: scale(1.15);
}

.menu-icon i {
    font-size: 22px;
}

.menu-avatar-img {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--accent-color);
    position: relative;
    z-index: 1;
}

.menu-avatar-fallback {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--accent-color) 18%, transparent);
    border: 2px solid var(--accent-color);
    color: var(--accent-color);
    font-size: 14px;
}

.menu-label {
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2px;
    position: relative;
    z-index: 1;
    line-height: 1.2;
    text-align: center;
    max-width: 70px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.menu-sheet-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.22s ease;
    z-index: 999;
}

.menu-sheet-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.menu-sheet {
    position: fixed;
    left: 50%;
    transform: translateX(-50%) translateY(24px);
    bottom: calc(104px + env(safe-area-inset-bottom, 0px));
    width: min(600px, calc(100vw - 24px));
    background: rgba(28, 28, 30, 0.96);
    border: 1px solid var(--border-color);
    border-radius: 22px;
    box-shadow: 0 22px 90px rgba(0, 0, 0, 0.55);
    backdrop-filter: blur(28px);
    -webkit-backdrop-filter: blur(28px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.22s ease, opacity 0.22s ease;
    z-index: 1001;
    padding: 14px 14px 16px;
}

.menu-sheet.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.menu-sheet-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
}

.menu-sheet-item {
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.06);
    border-radius: 16px;
    padding: 12px 10px;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.15s ease, background 0.15s ease;
    font-family: inherit;
}

.menu-sheet-item:hover {
    background: rgba(255, 255, 255, 0.09);
    transform: translateY(-2px);
}

.menu-sheet-item:active {
    transform: scale(0.98);
}

.menu-sheet-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: color-mix(in srgb, var(--accent-color) 14%, transparent);
    color: var(--accent-color);
}

.menu-sheet-icon i {
    font-size: 22px;
}

.menu-sheet-text {
    font-size: 13px;
    font-weight: 700;
    color: var(--text-primary);
}

.menu-sheet-item.logout {
    border-color: rgba(255, 59, 48, 0.35);
    background: rgba(255, 59, 48, 0.10);
    color: #FF3B30;
}

.menu-sheet-item.logout .menu-sheet-icon {
    background: rgba(255, 59, 48, 0.12);
    color: #FF3B30;
}

.menu-sheet-item.logout:hover {
    background: rgba(255, 59, 48, 0.14);
}

@media (max-width: 520px) {
    .menu-sheet-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.shop-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
    margin-top: 20px;
}

.shop-product-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.shop-product-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.shop-product-image {
    position: relative;
    width: 100%;
    padding-top: 75%;
    background: rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.shop-product-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.shop-product-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 48px;
    color: var(--text-tertiary);
}

.shop-product-badge {
    position: absolute;
    top: 12px;
    right: 12px;
    background: var(--accent-color);
    color: #fff;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 12px;
    font-weight: 700;
}

.shop-product-body {
    padding: 20px;
}

.shop-product-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    line-height: 1.3;
}

.shop-product-description {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.5;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.shop-product-meta {
    display: flex;
    gap: 12px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.shop-product-color,
.shop-product-rating {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-secondary);
}

.shop-product-color i,
.shop-product-rating i {
    color: var(--accent-color);
}

.shop-product-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.shop-product-price {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.shop-product-old-price {
    font-size: 14px;
    color: var(--text-tertiary);
    text-decoration: line-through;
}

.shop-product-current-price {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-color);
}

.shop-product-buy {
    padding: 12px 24px;
    font-weight: 700;
    white-space: nowrap;
}

.shop-loading,
.shop-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
    font-size: 16px;
}

@media (max-width: 768px) {
    .shop-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 16px;
    }
    
    .shop-product-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .shop-product-buy {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .landing-title {
        font-size: 48px;
    }

    .landing-subtitle {
        font-size: 18px;
    }

    .landing-features {
        grid-template-columns: 1fr;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .menu-label {
        display: none;
    }
}