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

:root {
    --primary-color: #F8B195;
    --secondary-color: #F67280;
    --accent-color: #C06C84;
    --dark-color: #6C5B7B;
    --darker-color: #355C7D;
    --light-bg: #fafafa;
    --white: #ffffff;
    --gray-100: #f5f5f5;
    --gray-200: #eeeeee;
    --gray-300: #e0e0e0;
    --gray-400: #bdbdbd;
    --gray-500: #9e9e9e;
    --gray-600: #757575;
    --gray-700: #616161;
    --gray-800: #424242;
    --gray-900: #212121;
    --success: #4caf50;
    --warning: #ff9800;
    --error: #f44336;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.15);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--light-bg) 0%, var(--gray-100) 100%);
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    font-weight: 600;
    color: var(--dark-color);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo h1 {
    color: white;
    margin: 0;
    font-size: 1.8rem;
}

.logo span {
    font-size: 0.9rem;
    opacity: 0.9;
    display: block;
}

.header-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    background: transparent;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-color) 0%, var(--dark-color) 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.3);
}

.btn-outline {
    border: 1px solid var(--gray-300);
    color: var(--gray-700);
    background: white;
}

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

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

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

/* Main Content */
.main-content {
    padding: 2rem 0;
    min-height: calc(100vh - 200px);
}

/* Dashboard */
.dashboard {
    margin-bottom: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition);
}

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

.stat-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
}

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

.stat-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-color);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-600);
}

/* Filters */
.filters {
    background: white;
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-tabs {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-tab {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.filter-tab.active,
.filter-tab:hover {
    background: var(--accent-color);
    color: white;
    border-color: var(--accent-color);
}

.filter-actions {
    display: flex;
    gap: 0.5rem;
}

/* Goals */
.goals-section {
    margin-bottom: 3rem;
}

.goals-list {
    display: grid;
    gap: 1.5rem;
}

.goal-card {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

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

.goal-card.private {
    opacity: 0.7;
}

.goal-card.private::before {
    content: "🔒";
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
    font-size: 1.2rem;
}

.goal-header {
    padding: 1.5rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    position: relative;
}

.goal-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.5rem;
}

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

.goal-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.goal-description {
    opacity: 0.9;
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.goal-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    opacity: 0.9;
}

.goal-body {
    padding: 1.5rem;
}

.progress-section {
    margin-bottom: 1.5rem;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.progress-amount {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
}

.progress-percentage {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--accent-color);
}

.progress-bar {
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 0.5rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--dark-color));
    transition: width 0.3s ease;
}

.progress-details {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--gray-600);
}

.goal-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.goal-stat {
    text-align: center;
    padding: 0.75rem;
    background: var(--gray-100);
    border-radius: 8px;
}

.goal-stat-value {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--dark-color);
}

.goal-stat-label {
    font-size: 0.8rem;
    color: var(--gray-600);
}

.goal-actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.goal-actions .btn {
    flex: 1;
    min-width: 120px;
    justify-content: center;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.empty-state h3 {
    margin-bottom: 0.5rem;
    color: var(--gray-700);
}

.empty-state p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-content {
    background: white;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    animation: modalSlideIn 0.3s ease;
}

.modal-content.large {
    max-width: 800px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    color: var(--dark-color);
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--gray-500);
    padding: 0.25rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.close-btn:hover {
    background: var(--gray-100);
    color: var(--gray-700);
}

/* Forms */
.goal-form,
.contribution-form {
    padding: 1.5rem;
}

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

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.9rem;
    transition: var(--transition);
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(192, 108, 132, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 0.5rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

/* PIN Modal */
.pin-modal .modal-content {
    max-width: 400px;
}

.pin-container {
    padding: 2rem;
    text-align: center;
}

.pin-container h2 {
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.pin-container p {
    color: var(--gray-600);
    margin-bottom: 2rem;
}

.pin-input {
    margin-bottom: 2rem;
}

.pin-input input {
    width: 150px;
    padding: 1rem;
    font-size: 1.5rem;
    text-align: center;
    letter-spacing: 0.5rem;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
}

.pin-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Settings */
.settings-content {
    padding: 1.5rem;
}

.setting-group {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--gray-200);
}

.setting-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.setting-group h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.setting-group .btn {
    margin-right: 0.5rem;
    margin-bottom: 0.5rem;
}

.setting-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    color: var(--gray-700);
}

.setting-group input[type="checkbox"] {
    margin-right: 0.5rem;
}

/* Goal Details */
.goal-details-content {
    padding: 1.5rem;
}

.details-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.details-section h3 {
    margin-bottom: 1rem;
    color: var(--dark-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.contribution-list {
    max-height: 300px;
    overflow-y: auto;
}

.contribution-item {
    padding: 1rem;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    background: var(--gray-50);
}

.contribution-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.contribution-amount {
    font-weight: 600;
    color: var(--success);
}

.contribution-date {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.contribution-notes {
    font-size: 0.9rem;
    color: var(--gray-700);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
}

.toast {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    padding: 1rem 1.5rem;
    margin-bottom: 0.5rem;
    border-left: 4px solid var(--success);
    animation: toastSlideIn 0.3s ease;
    position: relative;
    min-width: 300px;
}

.toast.error {
    border-left-color: var(--error);
}

.toast.warning {
    border-left-color: var(--warning);
}

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

/* Footer */
.footer {
    background: var(--gray-800);
    color: white;
    text-align: center;
    padding: 1.5rem 0;
    margin-top: 3rem;
}

.footer p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .logo h1 {
        font-size: 1.5rem;
    }

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

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

    .filter-tabs {
        justify-content: center;
    }

    .filter-actions {
        justify-content: center;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-actions {
        flex-direction: column;
    }

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

    .goal-actions {
        flex-direction: column;
    }

    .goal-actions .btn {
        min-width: auto;
    }

    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
    }

    .toast-container {
        left: 20px;
        right: 20px;
    }

    .toast {
        min-width: auto;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 1rem 0;
    }

    .stat-card {
        padding: 1rem;
    }

    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 2rem;
    }

    .goal-header {
        padding: 1rem;
    }

    .goal-body {
        padding: 1rem;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

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

.text-success {
    color: var(--success);
}

.text-error {
    color: var(--error);
}

.text-warning {
    color: var(--warning);
}

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

.spinner {
    border: 2px solid var(--gray-200);
    border-top: 2px solid var(--accent-color);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
    display: inline-block;
    margin-right: 0.5rem;
}

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

/* Accessibility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus styles for accessibility */
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 4px 20px rgba(0, 0, 0, 0.4);
    }
    
    .btn {
        border: 2px solid currentColor;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}