:root {
    --primary: #FF8FAB;
    --primary-dark: #FF6B8A;
    --secondary: #FFD93D;
    --accent: #6BCB77;
    --blue: #4D96FF;
    --purple: #9D4EDD;
    --orange: #FF9F45;
    --bg: #FFF5F7;
    --card-bg: #FFFFFF;
    --text: #2D3436;
    --text-light: #636E72;
    --border: #FFE4E8;
    --shadow: rgba(255, 143, 171, 0.15);
}

[data-theme="dark"] {
    --primary: #FF8FAB;
    --primary-dark: #FFB3C6;
    --secondary: #FFD93D;
    --accent: #6BCB77;
    --blue: #4D96FF;
    --purple: #9D4EDD;
    --orange: #FF9F45;
    --bg: #1A1A2E;
    --card-bg: #16213E;
    --text: #EAEAEA;
    --text-light: #A0A0A0;
    --border: #2A2A4A;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Quicksand', sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Animated background */
.bg-pattern {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image:
        radial-gradient(circle at 20% 30%, rgba(255, 143, 171, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 217, 61, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(107, 203, 119, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    animation: slideDown 0.5s ease;
}

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

.logo {
    font-family: 'Nunito', sans-serif;
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.theme-toggle {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.3rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    border-color: var(--primary);
}

/* Baby Selector & Actions */
.header-actions {
    display: flex;
    gap: 10px;
    align-items: center;
}

.baby-selector {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 8px 14px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--shadow);
}

.baby-selector:hover {
    border-color: var(--primary);
}

.baby-selector select {
    background: transparent;
    border: none;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    outline: none;
}

.action-btn {
    background: var(--card-bg);
    border: 2px solid var(--border);
    border-radius: 50%;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px var(--shadow);
}

.action-btn:hover {
    transform: scale(1.1);
    border-color: var(--primary);
}

/* Baby Management Modal */
.baby-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 300px;
    overflow-y: auto;
    margin-bottom: 16px;
}

.baby-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg);
    border-radius: 12px;
    border: 2px solid var(--border);
}

.baby-item.active {
    border-color: var(--primary);
    background: linear-gradient(135deg, rgba(255, 143, 171, 0.1) 0%, transparent 100%);
}

.baby-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.baby-info {
    flex: 1;
}

.baby-name {
    font-weight: 600;
    font-size: 0.95rem;
}

.baby-details {
    font-size: 0.8rem;
    color: var(--text-light);
}

.baby-actions {
    display: flex;
    gap: 6px;
}

.baby-actions .icon-btn {
    width: 32px;
    height: 32px;
}

/* Tab Navigation */
.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 8px;
    border-radius: 20px;
    box-shadow: 0 4px 16px var(--shadow);
    animation: slideDown 0.5s ease 0.1s both;
}

.tab {
    flex: 1;
    padding: 12px 8px;
    border: none;
    background: transparent;
    color: var(--text-light);
    font-family: 'Quicksand', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 14px;
    transition: all 0.3s ease;
}

.tab.active {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 143, 171, 0.4);
}

.tab:hover:not(.active) {
    background: var(--bg);
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-content.active {
    display: block;
}

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

/* Quick Record Cards */
.quick-actions {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.action-card {
    background: var(--card-bg);
    border: 3px solid var(--border);
    border-radius: 20px;
    padding: 20px 16px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    animation: scaleIn 0.4s ease both;
    box-shadow: 0 4px 12px var(--shadow);
}

.action-card:active {
    transform: scale(0.95);
}

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.action-card:nth-child(1) { animation-delay: 0.1s; }
.action-card:nth-child(2) { animation-delay: 0.15s; }
.action-card:nth-child(3) { animation-delay: 0.2s; }
.action-card:nth-child(4) { animation-delay: 0.25s; }
.action-card:nth-child(5) { animation-delay: 0.3s; }

.action-icon {
    font-size: 2.5rem;
    margin-bottom: 8px;
    display: block;
}

.action-name {
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
}

/* Today Summary Panel */
.today-summary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    border-radius: 20px;
    padding: 20px;
    margin-bottom: 20px;
    color: white;
    animation: slideDown 0.5s ease 0.2s both;
}

.summary-title {
    font-size: 0.9rem;
    opacity: 0.9;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.summary-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.summary-item {
    text-align: center;
}

.summary-value {
    font-family: 'Nunito', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    line-height: 1;
}

.summary-label {
    font-size: 0.75rem;
    opacity: 0.85;
    margin-top: 4px;
}

/* Recent Activity Panel */
.recent-activity {
    margin-bottom: 20px;
}

.activity-header {
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.activity-item {
    background: var(--card-bg);
    border-radius: 14px;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 3px 10px var(--shadow);
    border: 2px solid var(--border);
    transition: all 0.3s ease;
}

.activity-item.warning {
    border-color: #FFB347;
    background: linear-gradient(135deg, rgba(255, 179, 71, 0.1) 0%, transparent 100%);
}

.activity-item.alert {
    border-color: #FF6B6B;
    background: linear-gradient(135deg, rgba(255, 107, 107, 0.1) 0%, transparent 100%);
}

.activity-icon {
    font-size: 1.8rem;
    width: 42px;
    height: 42px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: 12px;
    flex-shrink: 0;
}

.activity-info {
    flex: 1;
    min-width: 0;
}

.activity-type {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}

.activity-time {
    font-size: 0.75rem;
    color: var(--text-light);
}

.activity-countdown {
    font-family: 'Nunito', sans-serif;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    white-space: nowrap;
}

.activity-item.warning .activity-countdown {
    color: #FF9F45;
}

.activity-item.alert .activity-countdown {
    color: #FF6B6B;
}

/* Status Cards */
.status-grid {
    display: grid;
    gap: 12px;
    margin-bottom: 20px;
}

.status-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 4px 12px var(--shadow);
    border: 2px solid var(--border);
    transition: all 0.2s ease;
}

.status-card:hover {
    border-color: var(--primary);
}

.status-icon {
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: 14px;
}

.status-info {
    flex: 1;
}

.status-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 4px;
}

.status-value {
    font-family: 'Nunito', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text);
}

.status-time {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-top: 2px;
}

/* History List */
.history-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.filter-btn {
    padding: 8px 16px;
    border: 2px solid var(--border);
    background: var(--card-bg);
    border-radius: 20px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.history-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.history-item {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 16px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    box-shadow: 0 4px 12px var(--shadow);
    border: 2px solid var(--border);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.history-icon {
    font-size: 1.8rem;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    border-radius: 12px;
    flex-shrink: 0;
}

.history-details {
    flex: 1;
}

.history-title {
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 2px;
}

.history-meta {
    font-size: 0.85rem;
    color: var(--text-light);
}

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

.icon-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: var(--bg);
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

.icon-btn.delete:hover {
    background: #FF6B6B;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 4px 12px var(--shadow);
    border: 2px solid var(--border);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

.stat-value {
    font-family: 'Nunito', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary) 0%, var(--purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-sub {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-top: 4px;
}

/* Chart Container */
.chart-container {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 18px;
    margin-bottom: 16px;
    box-shadow: 0 4px 12px var(--shadow);
    border: 2px solid var(--border);
}

.chart-title {
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 14px;
    color: var(--text);
}

.chart-wrapper {
    position: relative;
    height: 200px;
}

/* Event Type Filter */
.event-filter {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.event-filter-btn {
    padding: 8px 14px;
    border: 2px solid var(--border);
    background: var(--card-bg);
    border-radius: 16px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
    animation: fadeIn 0.2s ease;
}

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

.modal {
    background: var(--card-bg);
    border-radius: 24px;
    padding: 24px;
    width: 90%;
    max-width: 380px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: scaleUp 0.3s ease;
}

@keyframes scaleUp {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-title {
    font-family: 'Quicksand', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text);
}

.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border);
    border-radius: 12px;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    background: var(--bg);
    color: var(--text);
    transition: all 0.2s ease;
}

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

.modal-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    flex: 1;
    padding: 14px;
    border: none;
    border-radius: 14px;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(255, 143, 171, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(255, 143, 171, 0.5);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--primary);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-light);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-text {
    font-size: 1rem;
}

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--text);
    color: var(--bg);
    padding: 14px 24px;
    border-radius: 14px;
    font-family: 'Quicksand', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* Loading */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* 喂奶类型选择 */
.feeding-type-tabs {
    display: flex;
    gap: 10px;
}

.feeding-type-tab {
    flex: 1;
    position: relative;
}

.feeding-type-tab input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.feeding-type-tab span {
    display: block;
    padding: 12px 16px;
    border: 2px solid var(--border);
    background: var(--bg);
    border-radius: 12px;
    text-align: center;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.feeding-type-tab input:checked + span {
    border-color: var(--primary);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.feeding-type-tab:hover span {
    border-color: var(--primary);
}

/* 容量快捷按钮 */
.volume-shortcuts {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.volume-shortcut {
    padding: 8px 14px;
    border: 2px solid var(--border);
    background: var(--bg);
    border-radius: 10px;
    font-family: 'Quicksand', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s ease;
}

.volume-shortcut:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
}

.volume-shortcut:active {
    transform: scale(0.95);
}

/* Responsive */
@media (max-width: 400px) {
    .quick-actions {
        grid-template-columns: 1fr;
    }

    .action-card {
        padding: 16px;
        display: flex;
        align-items: center;
        gap: 16px;
        text-align: left;
    }

    .action-icon {
        margin-bottom: 0;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .volume-shortcuts {
        gap: 6px;
    }

    .volume-shortcut {
        padding: 6px 10px;
        font-size: 0.8rem;
    }
}