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

:root {
    /* Light Theme */
    --primary-color: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --secondary-color: #10b981;
    --secondary-light: #34d399;
    --secondary-dark: #059669;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-tertiary: #94a3b8;
    --border-color: #e2e8f0;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --transition: all 0.3s ease;
}

.dark-theme {
    /* Dark Theme */
    --primary-color: #818cf8;
    --primary-light: #a5b4fc;
    --primary-dark: #6366f1;
    --secondary-color: #34d399;
    --secondary-light: #6ee7b7;
    --secondary-dark: #10b981;
    --danger-color: #f87171;
    --warning-color: #fbbf24;
    --info-color: #60a5fa;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-tertiary: #94a3b8;
    --border-color: #475569;
    --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 10px 25px rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    min-height: 100vh;
}

/* Loading Screen */
#loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    z-index: 9999;
    transition: opacity 0.5s, transform 0.5s;
}

#loading-overlay h2 {
    margin-bottom: 10px;
    font-weight: 600;
}

#loading-overlay p {
    opacity: 0.8;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    position: relative;
}

.loading-spinner:after {
    content: '';
    position: absolute;
    top: -4px;
    left: -4px;
    right: -4px;
    bottom: -4px;
    border: 4px solid transparent;
    border-top-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    animation: spin 1.5s linear infinite reverse;
}

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

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

.notification-toggle {
    position: fixed;
    top: 20px;
    right: 80px;
    z-index: 1000;
}

.theme-btn {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 8px 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    font-weight: 500;
}

.theme-btn:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

.reminder-indicator {
    position: relative;
}

.reminder-indicator::after {
    content: '';
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: var(--danger-color);
    border-radius: 50%;
    border: 2px solid var(--bg-primary);
}

/* Header */
.main-header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    margin-bottom: 30px;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.logo-text h1 {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.user-avatar:hover {
    background: var(--primary-color);
    color: white;
}

/* Main Container */
.main-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px 40px;
}

/* Section Titles */
.section-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-title i {
    color: var(--primary-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

/* Overview Section */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.overview-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.overview-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--card-shadow-hover);
    border-color: var(--primary-light);
}

.overview-card.daily::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.overview-card.weekly::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
}

.overview-card.monthly::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary-color), var(--secondary-light));
}

.overview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.overview-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-badge {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 4px 12px;
    border-radius: var(--radius-xl);
    font-size: 12px;
    font-weight: 500;
}

.progress-display {
    display: flex;
    align-items: center;
    gap: 20px;
}

.circular-progress {
    position: relative;
    width: 80px;
    height: 80px;
}

.progress-ring {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: conic-gradient(var(--primary-color) 0%, var(--bg-tertiary) 0%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.progress-ring::before {
    content: '';
    position: absolute;
    width: 70px;
    height: 70px;
    background: var(--bg-secondary);
    border-radius: 50%;
}

.progress-value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
}

.progress-info {
    flex: 1;
}

.progress-info p {
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-size: 14px;
}

.progress-stats {
    display: flex;
    gap: 12px;
}

.stat {
    font-size: 12px;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat i {
    color: var(--primary-color);
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.dashboard-column {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

/* Chart Section */
.chart-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
}

.chart-container {
    margin-top: 20px;
}

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

.chart-bars {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 150px;
    padding: 0 10px;
}

.chart-bar {
    width: 40px;
    background: linear-gradient(to top, var(--primary-color), var(--primary-light));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    position: relative;
    transition: var(--transition);
    cursor: pointer;
}

.chart-bar:hover {
    transform: translateY(-5px);
    opacity: 0.9;
}

.chart-bar-value {
    position: absolute;
    top: -25px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-days {
    display: flex;
    justify-content: space-between;
    padding: 0 10px;
    margin-top: 10px;
}

.chart-day {
    width: 40px;
    text-align: center;
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* Habits Section */
.habits-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
}

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

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

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

.habit-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.habit-checkbox.checked {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

.habit-name {
    flex: 1;
    font-weight: 500;
    color: var(--text-primary);
}

.habit-streak {
    font-size: 12px;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

/* Focus Section */
.focus-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
}

.day-navigation {
    margin: 20px 0;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 8px;
}

.day-tabs {
    display: flex;
    gap: 4px;
}

.day-tab {
    flex: 1;
    padding: 10px;
    border: none;
    background: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.day-tab.active {
    background: var(--bg-primary);
    color: var(--primary-color);
    box-shadow: var(--card-shadow);
}

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

.day-name {
    font-weight: 600;
}

.day-date {
    font-size: 12px;
    opacity: 0.7;
}

.tasks-container {
    min-height: 300px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: 20px;
    margin-bottom: 20px;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-tertiary);
}

.empty-state.small {
    padding: 20px;
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state h3 {
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 20px;
    font-size: 14px;
}

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

.task-item {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: 16px;
    border-left: 4px solid var(--primary-color);
    transition: var(--transition);
}

.task-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--card-shadow);
}

.task-item.completed {
    opacity: 0.7;
    border-left-color: var(--secondary-color);
}

.task-item.completed .task-title {
    text-decoration: line-through;
    color: var(--text-tertiary);
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.task-title {
    font-weight: 500;
    color: var(--text-primary);
    flex: 1;
}

.task-time {
    font-size: 12px;
    color: var(--text-tertiary);
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.task-reminder {
    font-size: 12px;
    color: var(--warning-color);
    margin-left: 8px;
}

.task-description {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    line-height: 1.4;
}

.task-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
}

.task-meta {
    display: flex;
    gap: 8px;
    align-items: center;
}

.task-recurrence {
    font-size: 12px;
    color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

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

.task-counter {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-tertiary);
    padding: 4px;
    border-radius: var(--radius-sm);
}

.counter-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: none;
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.counter-value {
    min-width: 24px;
    text-align: center;
    font-weight: 600;
    font-size: 14px;
}

.completed-value {
    color: var(--secondary-color);
}

.remaining-value {
    color: var(--text-secondary);
}

.task-edit-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* Quick Stats */
.quick-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.stat-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.stat-icon {
    width: 40px;
    height: 40px;
    background: var(--primary-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

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

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 12px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Goals Section */
.goals-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
}

.goal-filter {
    display: flex;
    gap: 4px;
}

.filter-btn {
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

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

.filter-btn:hover:not(.active) {
    background: var(--bg-secondary);
}

.goals-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.goal-item {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.goal-item:hover {
    transform: translateX(5px);
}

.goal-checkbox {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
}

.goal-checkbox.checked {
    background: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

.goal-content {
    flex: 1;
}

.goal-title {
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.goal-meta {
    display: flex;
    gap: 8px;
    font-size: 12px;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.goal-category {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-color);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.goal-status {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
}

.goal-status.current {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
}

.goal-status.overdue {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.goal-status.completed {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.goal-reminder {
    color: var(--warning-color);
}

.goal-due {
    font-size: 11px;
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Calendar Section */
.calendar-section {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 24px;
    border: 1px solid var(--border-color);
    margin-top: 30px;
}

.calendar-controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.calendar-controls span {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 120px;
    text-align: center;
}

.calendar-view {
    margin-top: 20px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    padding: 20px;
    overflow-x: auto;
}

.calendar-grid {
    display: grid;
    grid-template-columns: 120px repeat(7, 1fr);
    gap: 1px;
    background: var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.calendar-header {
    display: contents;
}

.calendar-header-cell {
    background: var(--bg-secondary);
    padding: 12px;
    text-align: center;
    font-weight: 600;
    color: var(--text-primary);
}

.calendar-row {
    display: contents;
}

.habit-calendar-cell {
    background: var(--bg-primary);
    padding: 12px;
    display: flex;
    align-items: center;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.day-calendar-cell {
    background: var(--bg-primary);
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.calendar-today {
    background: rgba(99, 102, 241, 0.15) !important;
    border: 2px solid var(--primary-color) !important;
}

.day-calendar-cell.completed {
    background: rgba(16, 185, 129, 0.1);
    color: var(--secondary-color);
}

.day-calendar-cell.completed i {
    font-size: 14px;
}

.goal-due {
    background: rgba(59, 130, 246, 0.2);
    color: var(--info-color);
}

.goal-due i {
    font-size: 12px;
}

/* Footer */
.main-footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 24px 0;
    margin-top: 40px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 8px;
}

.footer-stats {
    display: flex;
    gap: 16px;
}

.footer-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

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

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    justify-content: center;
}

.icon-btn {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 23, 42, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-dialog {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    box-shadow: var(--card-shadow-hover);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    justify-content: flex-end;
}

/* Form Elements */
.form-group {
    margin-bottom: 20px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

.form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.reminder-setting {
    display: flex;
    gap: 12px;
    align-items: center;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.reminder-select {
    width: 140px;
}

/* Notification Panel */
.notification-panel {
    position: fixed;
    top: 80px;
    right: 20px;
    width: 320px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow-hover);
    z-index: 1000;
    display: none;
}

.notification-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-header h4 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.notification-list {
    max-height: 400px;
    overflow-y: auto;
}

.notification-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
    align-items: flex-start;
    cursor: pointer;
    transition: var(--transition);
}

.notification-item:hover {
    background: var(--bg-tertiary);
}

.notification-item.unread {
    background: rgba(99, 102, 241, 0.05);
}

.notification-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.notification-content {
    flex: 1;
}

.notification-time {
    font-size: 11px;
    color: var(--text-tertiary);
    margin-top: 4px;
}

/* Habits Edit List */
.habits-edit-list {
    margin-bottom: 20px;
}

.habit-edit-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-bottom: 8px;
}

.habit-edit-input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

.fade-in {
    animation: fadeInUp 0.5s ease-out forwards;
}

/* Custom notification */
.custom-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: var(--card-shadow-hover);
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: 12px;
    max-width: 350px;
    animation: slideInRight 0.3s ease-out;
    transform: translateX(0);
}

/* Responsive Design */
@media (max-width: 768px) {
    .overview-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .quick-stats {
        grid-template-columns: 1fr;
    }
    
    .calendar-grid {
        grid-template-columns: 100px repeat(7, 1fr);
        font-size: 12px;
    }
    
    .modal-dialog {
        max-width: 95%;
    }
    
    .theme-toggle {
        top: 10px;
        right: 10px;
    }
    
    .notification-toggle {
        top: 10px;
        right: 70px;
    }
    
    .theme-btn span {
        display: none;
    }
    
    .reminder-setting {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .reminder-select {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .calendar-grid {
        grid-template-columns: 80px repeat(7, 1fr);
        font-size: 11px;
    }
    
    .modal-footer {
        flex-direction: column;
    }
    
    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }
    
    .notification-panel {
        width: calc(100% - 40px);
        right: 20px;
    }
    
    .goal-filter {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}
/* Auth Styles */
#auth-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 20px;
}

.auth-wrapper {
    width: 100%;
    max-width: 420px;
}

.auth-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.logo-icon-large {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 32px;
    margin: 0 auto 20px;
}

.auth-header h1 {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.auth-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 4px;
    margin-bottom: 30px;
}

.auth-tab {
    flex: 1;
    padding: 12px;
    border: none;
    background: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
    transition: var(--transition);
}

.auth-tab.active {
    background: var(--bg-primary);
    color: var(--primary-color);
    box-shadow: var(--card-shadow);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.password-toggle {
    position: relative;
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
}

.password-toggle-btn:hover {
    color: var(--text-primary);
}

.auth-links {
    text-align: right;
    margin-bottom: 20px;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 14px;
}

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

.auth-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 24px 0;
    color: var(--text-tertiary);
    font-size: 14px;
}

.auth-divider::before,
.auth-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.auth-divider span {
    padding: 0 12px;
}

.auth-footer {
    text-align: center;
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 14px;
}

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

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

.auth-status {
    margin-top: 20px;
    padding: 12px;
    border-radius: var(--radius-md);
    font-size: 14px;
    display: none;
}

.auth-status.success {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.2);
    display: block;
}

.auth-status.error {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: block;
}

.form-check {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.form-check input[type="checkbox"] {
    margin-top: 4px;
}

.form-check label {
    color: var(--text-secondary);
    line-height: 1.4;
}

.form-check a {
    color: var(--primary-color);
    text-decoration: none;
}

.form-check a:hover {
    text-decoration: underline;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 8px;
}

.spinner.hidden {
    display: none;
}

.btn .spinner {
    display: inline-block;
    vertical-align: middle;
}

/* User Profile Styles */
.user-profile-toggle {
    position: fixed;
    top: 20px;
    right: 140px;
    z-index: 1000;
}

.user-profile-menu {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    width: 280px;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--card-shadow-hover);
    display: none;
    z-index: 1001;
}

.user-profile-toggle:hover .user-profile-menu {
    display: block;
}

.user-info {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 48px;
    height: 48px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    font-size: 20px;
}

.user-details {
    flex: 1;
}

#user-display-email {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
    margin-bottom: 4px;
}

.user-status {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 2px 8px;
    background: rgba(59, 130, 246, 0.1);
    border-radius: 12px;
    display: inline-block;
}

.profile-menu-actions {
    padding: 8px;
}

.profile-menu-item {
    width: 100%;
    padding: 12px;
    border: none;
    background: none;
    text-align: left;
    color: var(--text-primary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: var(--transition);
}

.profile-menu-item:hover {
    background: var(--bg-tertiary);
}

.profile-menu-item.logout {
    color: var(--danger-color);
}

.profile-menu-item.logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

.profile-menu-item i {
    width: 20px;
    text-align: center;
}

@media (max-width: 768px) {
    .user-profile-toggle {
        right: 120px;
    }
    
    .auth-card {
        padding: 30px 20px;
    }
    
    .user-profile-menu {
        width: calc(100vw - 40px);
        right: -10px;
    }
}