/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.2);
    --shadow-light: 0 8px 32px rgba(31, 38, 135, 0.37);
    --shadow-medium: 0 20px 40px rgba(0, 0, 0, 0.1);
    --shadow-heavy: 0 30px 60px rgba(0, 0, 0, 0.15);
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-muted: #999999;
    --border-color: #e1e5e9;
    --success-color: #2ecc71;
    --warning-color: #f39c12;
    --danger-color: #e74c3c;
    --border-radius: 20px;
    --border-radius-small: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 16px;
    overflow-x: hidden;
}

/* App Container */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Header */
.header {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 25px 35px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.header:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-heavy);
}

.header-content {
    display: flex;
    flex-direction: column;
}

.logo {
    font-size: 2.2rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 5px;
}

.tagline {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.header-actions {
    display: flex;
    gap: 15px;
}

/* Buttons */
.btn-primary, .btn-secondary, .btn-icon {
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    padding: 15px 25px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.6);
}

.btn-secondary {
    background: var(--glass-bg);
    color: var(--text-primary);
    padding: 12px 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-light);
}

.btn-secondary:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-medium);
    background: white;
}

.btn-icon {
    width: 40px;
    height: 40px;
    background: var(--glass-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    font-size: 1.2rem;
}

.btn-icon:hover {
    background: var(--primary-gradient);
    color: white;
    transform: scale(1.1);
}

/* Statistics Section */
.stats-section {
    margin-bottom: 30px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.stat-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

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

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-heavy);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    opacity: 0.8;
}

.stat-value {
    font-size: 2.8rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 8px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.stat-change {
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Main Content Grid */
.main-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 25px;
    margin-bottom: 100px;
}

/* Card Styles */
.card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
    transition: var(--transition);
    height: fit-content;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-heavy);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.card-header h2 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* Expense Entry Card */
.expense-entry {
    grid-column: 1 / -1;
    max-width: 100%;
}

.ai-status {
    background: var(--success-gradient);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.ai-input-container {
    margin-bottom: 25px;
}

.ai-input {
    width: 100%;
    padding: 20px;
    border: 2px solid var(--border-color);
    border-radius: 15px;
    font-size: 1rem;
    font-family: inherit;
    resize: none;
    transition: var(--transition);
    background: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.ai-input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.3);
    background: white;
}

.input-actions {
    display: flex;
    gap: 15px;
    margin-top: 15px;
    flex-wrap: wrap;
}

.ai-suggestions {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border: 1px solid rgba(102, 126, 234, 0.2);
    border-radius: var(--border-radius-small);
    padding: 20px;
    margin-bottom: 25px;
}

.suggestion-item {
    font-size: 0.95rem;
    line-height: 1.6;
}

.quick-add-section h3 {
    color: var(--text-primary);
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.quick-add-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.quick-add-btn {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.3);
    border-radius: var(--border-radius-small);
    padding: 15px 10px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.quick-add-btn:hover {
    background: var(--primary-gradient);
    color: white;
    transform: translateY(-2px);
}

/* Financial Growth Tree */
.tree-health {
    background: var(--success-gradient);
    color: white;
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.9rem;
}

.tree-visual {
    text-align: center;
    margin: 20px 0;
}

.tree-container {
    position: relative;
    margin-bottom: 20px;
}

.tree-emoji {
    font-size: 5rem;
    margin-bottom: 10px;
    transition: var(--transition);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.tree-leaves {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateX(-50%) translateY(0px); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

.tree-stats {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

.tree-stat {
    text-align: center;
    flex: 1;
}

.tree-stat-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.tree-stat-value {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.progress-bar {
    height: 12px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 10px;
    overflow: hidden;
    margin-top: 20px;
}

.progress-fill {
    height: 100%;
    background: var(--success-gradient);
    border-radius: 10px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Chart Section */
.chart-controls {
    display: flex;
    gap: 10px;
}

.chart-period {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 15px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.chart-period.active,
.chart-period:hover {
    background: var(--primary-gradient);
    color: white;
    border-color: transparent;
}

.chart-container {
    height: 300px;
    margin: 20px 0;
    position: relative;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 15px;
}

/* Expenses List */
.list-controls {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.search-input,
.filter-select {
    padding: 10px 15px;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-small);
    font-size: 0.9rem;
    background: white;
    transition: var(--transition);
}

.search-input {
    flex: 1;
    min-width: 200px;
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 10px rgba(102, 126, 234, 0.2);
}

.expense-list {
    max-height: 400px;
    overflow-y: auto;
    margin: 20px 0;
}

.expense-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.expense-item:hover {
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--border-radius-small);
    padding: 20px 15px;
    margin: 0 -15px;
}

.expense-item:last-child {
    border-bottom: none;
}

.expense-details {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 15px;
}

.mood-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.mood-happy { background: var(--success-color); }
.mood-neutral { background: var(--warning-color); }
.mood-stressed { background: var(--danger-color); }

.expense-main {
    flex: 1;
}

.expense-title {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.expense-meta {
    color: var(--text-muted);
    font-size: 0.85rem;
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.expense-amount {
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--danger-color);
    text-align: right;
}

.expense-category {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.list-actions {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* Insights Panel */
.insights-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.insight-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--border-radius-small);
    border-left: 4px solid #667eea;
}

.insight-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.insight-text {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.6;
}

.insight-text strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: 5px;
}

/* Goals Section */
.goals-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.goal-item {
    background: rgba(102, 126, 234, 0.05);
    border-radius: var(--border-radius-small);
    padding: 20px;
    transition: var(--transition);
}

.goal-item:hover {
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-2px);
}

.goal-info {
    margin-bottom: 15px;
}

.goal-title {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: 5px;
}

.goal-progress {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.goal-progress-bar {
    height: 8px;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 4px;
    overflow: hidden;
}

.goal-progress-fill {
    height: 100%;
    background: var(--success-gradient);
    border-radius: 4px;
    transition: width 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Floating Action Button */
.floating-add {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: var(--primary-gradient);
    border: none;
    border-radius: 50%;
    box-shadow: var(--shadow-heavy);
    cursor: pointer;
    transition: var(--transition);
    z-index: 1000;
}

.floating-add:hover {
    transform: scale(1.1) rotate(45deg);
    box-shadow: 0 40px 80px rgba(0, 0, 0, 0.2);
}

.fab-icon {
    color: white;
    font-size: 2rem;
    font-weight: 300;
}

/* Location Alert */
.location-alert {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-small);
    padding: 20px;
    box-shadow: var(--shadow-heavy);
    max-width: 350px;
    z-index: 1001;
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.alert-content {
    display: flex;
    gap: 15px;
    align-items: flex-start;
}

.alert-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.alert-text {
    flex: 1;
}

.alert-text strong {
    display: block;
    margin-bottom: 5px;
    color: var(--text-primary);
}

.alert-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin: 0;
}

.alert-dismiss {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: var(--text-muted);
    transition: var(--transition);
}

.alert-dismiss:hover {
    color: var(--text-primary);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(102, 126, 234, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    font-weight: 600;
    font-size: 1.1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .app-container {
        padding: 15px;
    }

    .header {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }

    .header-actions {
        width: 100%;
        justify-content: center;
    }

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

    .main-content {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .list-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input {
        min-width: auto;
    }

    .floating-add {
        bottom: 20px;
        right: 20px;
        width: 50px;
        height: 50px;
    }

    .fab-icon {
        font-size: 1.5rem;
    }

    .location-alert {
        top: 10px;
        right: 10px;
        left: 10px;
        max-width: none;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.8rem;
    }

    .stat-value {
        font-size: 2.2rem;
    }

    .tree-emoji {
        font-size: 4rem;
    }

    .card {
        padding: 20px;
    }

    .expense-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .expense-amount {
        text-align: left;
        font-size: 1.1rem;
    }
}