/* ============================================
   TOUR CALCULATOR - UNIVERSAL STYLES
   ============================================ */

/* --- Design System Variables --- */
:root {
    /* Theme */
    --primary-color: #FFD633;
    --secondary-color: #111111;
    --background-color: #F5F6FA;
    --card-background: #FFFFFF;
    --accent-color: #FFB400;
    --text-color-primary: #111111;
    --text-color-secondary: #555555;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --border-color: #E5E5E5;
    --error-color: #e74c3c;
    --success-color: #2e7d32;

    /* Typography */
    --font-family: 'Poppins', sans-serif;
    --headline-size: 22px;
    --subheadline-size: 18px;
    --body-size: 14px;
    --caption-size: 12px;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;
    --line-height: 1.5;

    /* Layout */
    --border-radius-card: 24px;
    --border-radius-button: 18px;
    --border-radius-input: 14px;
    --spacing-small: 8px;
    --spacing-medium: 16px;
    --spacing-large: 24px;
    --max-card-width: 360px;
    --shadow-small: 0px 4px 10px var(--shadow-color);
    --shadow-medium: 0px 8px 20px rgba(0,0,0,0.15);

    /* Animation */
    --transition-speed: 0.3s;
}

/* --- Global Styles & Resets --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    color: var(--text-color-primary);
    font-size: var(--body-size);
    padding: var(--spacing-large);
    padding-bottom: 80px;
}

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

/* --- PAGE HEADER --- */
.page-header {
    text-align: center;
    margin-bottom: var(--spacing-large);
    padding-top: 40px;
}

.page-header h1 {
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-small);
}

.page-header p {
    color: var(--text-color-secondary);
    font-size: var(--body-size);
}

/* --- BUTTONS --- */
.cta-button {
    background: var(--primary-color);
    color: var(--text-color-primary);
    border-radius: var(--border-radius-button);
    font-weight: var(--font-weight-bold);
    padding: 12px 24px;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-size: var(--body-size);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-small);
    transition: transform var(--transition-speed), opacity var(--transition-speed);
    text-decoration: none;
}

.cta-button:hover {
    transform: scale(1.03);
}

.cta-button:active {
    opacity: 0.85;
    transform: scale(0.98);
}

.cta-button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.button-secondary {
    background: #f0f0f0;
    color: var(--secondary-color);
}

.button-secondary:hover {
    background: #e5e5e5;
}

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

.button-danger:hover {
    background: #c0392b;
}

.button-sm {
    padding: 8px 16px;
    border-radius: 12px;
    font-size: var(--caption-size);
}

/* Icon Button Styles */
.icon-button {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
    color: var(--text-color-secondary);
    transition: color var(--transition-speed), transform var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-button:hover {
    color: var(--secondary-color);
    transform: scale(1.1);
}

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

/* Close button specific styles */
.close-modal-btn i {
    font-size: 20px;
}

/* Remove member button hover */
.remove-member-btn:hover {
    color: var(--error-color);
}

/* Edit member button */
.edit-member-btn {
    color: var(--text-color-secondary);
}

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

/* Add contribution button */
.add-contribution-btn {
    color: var(--text-color-primary);
    background: var(--primary-color);
}

.add-contribution-btn:hover {
    background: var(--accent-color);
    color: var(--text-color-primary);
}

/* Remove contribution button */
.remove-contribution-btn {
    color: var(--text-color-secondary);
}

.remove-contribution-btn:hover {
    color: var(--error-color);
}

/* --- LINKS --- */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-color-secondary);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--transition-speed);
    margin-bottom: var(--spacing-large);
}

.back-link:hover {
    color: var(--secondary-color);
}

/* --- CARDS --- */
.tour-card {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-large);
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    display: block;
}

.tour-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-medium);
}

.section-card {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-large);
    box-shadow: var(--shadow-small);
    margin-bottom: var(--spacing-large);
}

/* --- HEADERS --- */
.header-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-large);
    gap: var(--spacing-medium);
    flex-wrap: wrap;
}

.tour-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-medium);
}

.tour-card-title {
    font-size: var(--subheadline-size);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
    margin-bottom: 4px;
    word-break: break-word;
}

.tour-card-date {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
}

/* --- GRIDS --- */
.tours-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-large);
    margin-bottom: var(--spacing-large);
}

.tour-card-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-medium);
    margin-bottom: var(--spacing-medium);
    padding-top: var(--spacing-medium);
    border-top: 1px solid var(--border-color);
}

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

.stat-label {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
    margin-bottom: 4px;
    display: block;
}

.stat-value {
    font-size: var(--subheadline-size);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
}

/* --- FOOTERS --- */
.tour-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-medium);
    border-top: 1px solid var(--border-color);
}

.tour-total {
    display: flex;
    flex-direction: column;
}

.tour-total-label {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
}

.tour-total-amount {
    font-size: 18px;
    font-weight: var(--font-weight-bold);
    color: var(--accent-color);
}

.view-tour-btn {
    background: var(--primary-color);
    color: var(--secondary-color);
    border: none;
    border-radius: 12px;
    padding: 8px 16px;
    font-size: var(--caption-size);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: transform var(--transition-speed);
}

.view-tour-btn:hover {
    transform: scale(1.05);
}

/* --- OWNER ACTIONS --- */
.owner-actions {
    display: flex;
    gap: var(--spacing-small);
    padding: 0 var(--spacing-large) var(--spacing-medium);
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-medium);
    margin-top: var(--spacing-small);
}

.action-btn {
    flex: 1;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 13px;
    padding: 8px 16px;
    border: none;
    cursor: pointer;
    font-family: var(--font-family);
    font-weight: var(--font-weight-bold);
}

/* --- EMPTY STATE --- */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-medium);
    opacity: 0.3;
}

.empty-state h2 {
    font-size: var(--headline-size);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
    margin-bottom: var(--spacing-small);
}

.empty-state p {
    color: var(--text-color-secondary);
    margin-bottom: var(--spacing-large);
}

/* --- INVITATION SECTION --- */
.invitation-section {
    background: linear-gradient(135deg, #fff9db 0%, #fff 100%);
    border: 2px solid var(--primary-color);
}

.section-title {
    font-size: var(--subheadline-size);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-medium);
    color: var(--secondary-color);
    display: flex;
    align-items: center;
}

.invitations-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
}

.invitation-card {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-medium);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-medium);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.invitation-info {
    flex: 1;
}

.invitation-tour-name {
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
    font-size: 16px;
    margin-bottom: 4px;
}

.invitation-meta {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
}

.invitation-actions {
    display: flex;
    gap: var(--spacing-small);
    align-items: center;
    flex-shrink: 0;
}

/* --- ACCESS LIST (TOUR ACCESS PAGE) --- */
.access-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
}

.access-item {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-medium);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-medium);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

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

.access-info {
    flex: 1;
    min-width: 200px;
}

.access-email {
    font-weight: var(--font-weight-bold);
    color: var(--text-color);
    font-size: 16px;
    margin-bottom: 4px;
}

.access-meta {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.access-actions {
    display: flex;
    gap: var(--spacing-small);
    align-items: center;
    flex-shrink: 0;
    flex-wrap: wrap;
}

.copy-button {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--secondary-color);
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
}

.copy-button:hover {
    background: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow-small);
}

.copy-button svg {
    display: block;
}

/* --- BADGES --- */
.badge-edit {
    background-color: #cfe2ff;
    color: #084298;
}

.badge-view {
    background-color: #e7e7e7;
    color: #555;
}

.badge-shared {
    background-color: #e3f2fd;
    color: #1976d2;
    font-size: 11px;
    padding: 3px 10px;
    border-radius: 10px;
    font-weight: 600;
    white-space: nowrap;
    flex-shrink: 0;
}

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--caption-size);
    font-weight: var(--font-weight-medium);
}

.badge-pending {
    background-color: #fff3cd;
    color: #856404;
}

.badge-accepted {
    background-color: #d4edda;
    color: #155724;
}

.badge-revoked {
    background-color: #f8d7da;
    color: #721c24;
}

.badge-owner {
    background-color: #fff9db;
    color: #856404;
    font-weight: var(--font-weight-bold);
}

/* --- USER PROFILE BUTTON --- */
.user-profile-btn {
    position: fixed;
    top: var(--spacing-large);
    right: var(--spacing-large);
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 8px 20px;
    font-family: var(--font-family);
    color: var(--secondary-color);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    z-index: 200;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
}

.user-profile-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 12px;
}

.user-avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 32px;
    margin: 0 auto var(--spacing-medium);
}

/* --- TOAST MESSAGES --- */
/* Standalone toast message (for simple toasts) */
.toast-message {
    position: fixed;
    top: 20px;
    right: 20px;
    background: white;
    padding: 16px 24px;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    animation: slideInRight 0.3s ease;
    max-width: calc(100vw - 40px);
    width: auto;
    font-weight: var(--font-weight-medium);
    word-break: break-word;
    overflow-wrap: break-word;
    white-space: pre-wrap;
    font-size: 14px;
    line-height: 1.5;
    box-sizing: border-box;
}

.toast-message.success {
    border-left: 4px solid var(--success-color);
    color: var(--success-color);
}

.toast-message.error {
    border-left: 4px solid var(--error-color);
    color: var(--error-color);
}

/* Toast container - holds multiple toasts */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 10000;
    display: block;
    max-width: 420px;
    width: auto;
    pointer-events: none;
}

/* Individual toast card */
.toast {
    background: var(--card-background);
    border-radius: 12px;
    padding: 14px 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    display: inline-flex;
    align-items: center;
    gap: 10px;
    opacity: 0;
    transform: translateX(400px);
    animation: slideIn 0.3s ease forwards;
    pointer-events: auto;
    box-sizing: border-box;
    max-width: 420px;
    min-width: 280px;
}

.toast.hiding {
    animation: slideOut 0.3s ease forwards;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-close {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color-secondary);
    padding: 0;
    line-height: 0;
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.toast-close:hover {
    color: var(--secondary-color);
}

.toast.success .toast-icon { color: var(--success-color); }
.toast.error .toast-icon { color: var(--error-color); }
.toast.warning .toast-icon { color: #f59e0b; }
.toast.info .toast-icon { color: #3b82f6; }

.toast-message-text {
    display: none;
}

/* Toast message text */
.toast-message {
    flex: 1;
    font-size: 14px;
    color: var(--text-color-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* --- MODAL --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-speed), visibility var(--transition-speed);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-large);
    box-shadow: var(--shadow-medium);
    width: 90%;
    max-width: 400px;
    transform: scale(0.9);
    transition: transform var(--transition-speed);
    max-height: 90vh;
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-medium);
}

.modal-title {
    font-size: var(--subheadline-size);
    font-weight: var(--font-weight-bold);
}

.modal-body {
    margin-bottom: var(--spacing-medium);
    line-height: 1.6;
}

.modal-body ul {
    margin: var(--spacing-small) 0;
    padding-left: 20px;
}

.modal-body ul li {
    margin: 4px 0;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-small);
    justify-content: flex-end;
    margin-top: var(--spacing-medium);
}

.warning-icon {
    font-size: 48px;
    text-align: center;
    margin-bottom: var(--spacing-medium);
}

/* --- FORMS --- */
.form-group {
    margin-bottom: var(--spacing-medium);
    width: 100%;
}

.form-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-color-primary);
    font-size: 14px;
    width: 100%;
}

.input-field, .select-field {
    width: 100%;
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-input);
    padding: 12px 16px;
    font-family: var(--font-family);
    font-size: var(--body-size);
    transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
    box-sizing: border-box;
}

.input-field::placeholder {
    color: #AAAAAA;
    font-weight: var(--font-weight-regular);
}

.input-field:focus, .select-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 214, 51, 0.3);
}

.input-field:disabled {
    background-color: #f5f5f5;
    cursor: not-allowed;
    opacity: 0.7;
}

.password-toggle {
    position: relative;
    width: 100%;
    display: block;
}

.password-toggle .input-field {
    padding-right: 48px;
    width: 100%;
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color-secondary);
    padding: 6px;
    transition: color var(--transition-speed);
    z-index: 10;
    line-height: 0;
}

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

.password-toggle-btn svg {
    width: 20px;
    height: 20px;
    display: block;
}

.password-toggle-btn .eye-open {
    display: block;
}

.password-toggle-btn .eye-closed {
    display: none;
}

.password-toggle-btn.showing .eye-open {
    display: none;
}

.password-toggle-btn.showing .eye-closed {
    display: block;
}

.add-member-form {
    display: flex;
    gap: var(--spacing-small);
    flex-grow: 1;
    max-width: var(--max-card-width);
}

.invite-form {
    display: grid;
    gap: var(--spacing-medium);
}

.form-row {
    display: grid;
    grid-template-columns: 2fr 1fr auto;
    gap: var(--spacing-small);
}

/* --- ALERTS --- */
.alert {
    padding: 12px 16px;
    border-radius: 12px;
    margin-bottom: var(--spacing-medium);
    font-size: 14px;
    display: none;
}

.alert.show {
    display: block;
}

.alert-success {
    background: #e8f5e9;
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.alert-error {
    background: #ffebee;
    color: var(--error-color);
    border: 1px solid var(--error-color);
}

/* --- PROFILE PAGE STYLES --- */
.profile-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-large) 0;
}

.profile-header {
    text-align: center;
    margin-bottom: var(--spacing-large);
}

.profile-header h1 {
    font-size: 28px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

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

.user-avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 32px;
    margin: 0 auto var(--spacing-medium);
}

.settings-card {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-large);
    box-shadow: var(--shadow-small);
    margin-bottom: var(--spacing-large);
}

.settings-card h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: var(--spacing-medium);
    padding-bottom: var(--spacing-medium);
    border-bottom: 1px solid var(--border-color);
}

/* --- ANIMATIONS --- */
@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

@keyframes slideOut {
    to {
        opacity: 0;
        transform: translateX(400px);
    }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* --- MEDIA QUERIES --- */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-medium);
        padding-bottom: 60px;
        padding-top: 70px;
    }

    .page-header {
        padding-top: 20px;
    }

    .page-header h1 {
        font-size: 24px;
    }

    .user-profile-btn {
        top: 12px;
        right: 12px;
        padding: 6px 12px;
        font-size: 12px;
    }

    .user-avatar {
        width: 24px;
        height: 24px;
        font-size: 11px;
    }

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

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

    .back-link, .cta-button {
        justify-content: center;
    }

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

    .profile-container {
        padding: var(--spacing-medium);
    }

    .settings-card {
        padding: var(--spacing-medium);
    }

    .toast-container {
        max-width: 90vw;
        left: 5vw;
        right: auto;
    }

    .invitation-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .invitation-actions {
        width: 100%;
    }

    .invitation-actions .cta-button {
        width: 100%;
        justify-content: center;
    }

    .access-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .access-actions {
        width: 100%;
    }

    .access-actions .select-field {
        flex: 1;
        min-width: 120px;
    }

    .copy-button {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    body {
        padding: var(--spacing-small);
        font-size: 13px;
    }

    .cta-button {
        padding: 10px 16px;
        font-size: 12px;
    }

    .page-header h1 {
        font-size: 20px;
    }

    .modal-content {
        width: 95%;
        max-width: none;
    }

    .toast {
        min-width: calc(100vw - 32px);
    }
}

/* --- Index Page Specific Styles --- */

/* Main Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    gap: var(--spacing-large);
}

.main-header {
    text-align: center;
    margin-bottom: var(--spacing-medium);
}

.main-header h1 {
    font-size: var(--headline-size);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
}

.main-header p {
    color: var(--text-color-secondary);
    font-size: var(--body-size);
}

.actions-toolbar {
    display: flex;
    justify-content: center;
    gap: var(--spacing-small);
    margin: 0 auto var(--spacing-large) auto;
}

/* Component: Input & Forms */
.add-member-form {
    display: flex;
    gap: var(--spacing-small);
    flex-grow: 1;
    max-width: var(--max-card-width);
}

.input-field::placeholder {
    color: #AAAAAA;
    font-weight: var(--font-weight-regular);
}

.input-field:focus, .select-field:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 214, 51, 0.3);
}

/* Component: Summary Cards */
.summary-section {
    display: flex;
    justify-content: center;
    gap: var(--spacing-medium);
    flex-wrap: wrap;
}

.summary-card {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-medium) var(--spacing-large);
    box-shadow: var(--shadow-small);
    text-align: center;
    flex-grow: 1;
    max-width: var(--max-card-width);
}

.summary-card-title {
    font-size: var(--body-size);
    color: var(--text-color-secondary);
    margin-bottom: var(--spacing-small);
}

.summary-card-value {
    font-size: var(--subheadline-size);
    font-weight: var(--font-weight-bold);
    color: var(--secondary-color);
}

.summary-card-value span {
    font-weight: var(--font-weight-regular);
    font-size: var(--body-size);
}

/* Component: Member Cards */
.members-section {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-large);
    justify-content: center;
}

.member-card {
    background: var(--card-background);
    border-radius: var(--border-radius-card);
    padding: var(--spacing-medium);
    box-shadow: var(--shadow-small);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
    max-width: var(--max-card-width);
    margin: 0 auto;
    width: 100%;
}

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

.member-card-title {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    display: flex;
    align-items: center;
    gap: var(--spacing-small);
}

.contributions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-small);
    min-height: 50px;
}

.contribution-item, .transfer-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--body-size);
    background: #fafafa;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color var(--transition-speed);
}

.contribution-item:hover {
    background-color: #f0f0f0;
}

.transfer-item {
    cursor: default;
}

.transfer-item .contribution-title {
    display: flex;
    align-items: center;
    gap: 4px;
}

.transfer-item.transfer-in .contribution-amount {
    color: var(--success-color);
}

.transfer-item.transfer-out .contribution-amount {
    color: var(--error-color);
}

.contribution-title {
    color: var(--text-color-secondary);
}

.contribution-amount {
    font-weight: var(--font-weight-medium);
    color: var(--text-color-primary);
}

.contribution-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.contribution-item .remove-contribution-btn {
    padding: 2px;
    opacity: 0.6;
}

.contribution-item .remove-contribution-btn:hover {
    opacity: 1;
    color: var(--error-color);
}

.empty-contributions {
    text-align: center;
    color: var(--text-color-secondary);
    font-size: var(--caption-size);
    padding: var(--spacing-medium);
}

/* Component: Navbar (Bottom) */
.bottom-nav {
    position: fixed;
    bottom: var(--spacing-large);
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-background);
    border-radius: 30px;
    padding: var(--spacing-small);
    box-shadow: var(--shadow-medium);
    z-index: 100;
    display: flex;
    gap: var(--spacing-medium);
}

.nav-button-group {
    display: flex;
    gap: var(--spacing-small);
}

/* Settings Modal */
#settings-modal .modal-content {
    display: grid;
    gap: var(--spacing-large);
}

.settings-section {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-large);
}

.settings-section h3 {
    font-size: var(--body-size);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-medium);
}

.settings-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
}

/* Member Card Summary */
.member-card-summary {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-medium);
    margin-top: var(--spacing-small);
    display: grid;
    gap: var(--spacing-small);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.member-total-label {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
}

.member-total-amount {
    font-size: var(--body-size);
    font-weight: var(--font-weight-bold);
}

.balance-info {
    font-weight: var(--font-weight-bold);
    padding: 4px 12px;
    border-radius: 12px;
    font-size: var(--caption-size);
    text-align: right;
}

.positive-balance {
    background-color: #e8f5e9;
    color: #2e7d32;
}

.negative-balance {
    background-color: #ffebee;
    color: var(--error-color);
}

.settled-balance {
    background-color: #f5f5f5;
    color: var(--text-color-secondary);
}

/* Member Select List (Chips) */
.member-select-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-small);
}

.member-select-item {
    background-color: #f0f0f0;
    border: 1px solid transparent;
    border-radius: 20px;
    padding: 6px 12px;
    font-size: var(--caption-size);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 6px;
    user-select: none;
}

.member-select-item.selected {
    background-color: #fff9db;
    border-color: var(--primary-color);
    color: var(--secondary-color);
    font-weight: var(--font-weight-medium);
}

.member-select-item:not(.selected) {
    opacity: 0.6;
    text-decoration: line-through;
}

/* Suggestion Chips */
.suggestions-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
    min-height: 0;
}

.suggestion-chip {
    background-color: #f5f5f5;
    border: 1px solid #e0e0e0;
    border-radius: 16px;
    padding: 4px 12px;
    font-size: 12px;
    color: var(--text-color-secondary);
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.suggestion-chip:hover {
    background-color: #fff9db;
    border-color: var(--primary-color);
    color: var(--secondary-color);
}

/* History Styles */
.history-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
}

.history-item {
    display: flex;
    gap: var(--spacing-medium);
    padding-bottom: var(--spacing-medium);
    border-bottom: 1px solid var(--border-color);
}

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

.history-icon {
    background: #f0f0f0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--text-color-secondary);
}

.history-icon.contribution {
    background-color: #fff9db;
    color: var(--accent-color);
}

.history-icon.transfer {
    background-color: #e3f2fd;
    color: #2196f3;
}

.history-icon.waiver {
    background-color: #f3e5f5;
    color: #9c27b0;
}

.history-content {
    flex-grow: 1;
}

.history-title {
    font-weight: var(--font-weight-bold);
    font-size: var(--body-size);
    color: var(--secondary-color);
    margin-bottom: 2px;
}

.history-meta {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
    margin-bottom: 4px;
}

.history-amount {
    font-weight: var(--font-weight-bold);
    color: var(--text-color-primary);
}

.history-details {
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
    font-style: italic;
}

/* Modal Tabs */
.modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-medium);
    position: sticky;
    top: 0;
    background: var(--card-background);
    z-index: 10;
}

.modal-tab {
    flex: 1;
    text-align: center;
    padding: 12px 4px;
    cursor: pointer;
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-color-secondary);
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
    white-space: nowrap;
}

.modal-tab:hover {
    background-color: #fafafa;
}

.modal-tab.active {
    color: var(--secondary-color);
    border-bottom-color: var(--primary-color);
    font-weight: var(--font-weight-bold);
}

/* Report Image Container Styles */
#report-container {
    position: fixed;
    left: -10000px;
    top: 0;
    width: 800px;
    background: #ffffff;
    padding: 40px;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
    color: #111;
    z-index: 9999;
}

.rep-header {
    text-align: center;
    border-bottom: 4px solid var(--primary-color);
    padding-bottom: 20px;
    margin-bottom: 30px;
}

.rep-title {
    font-size: 32px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

.rep-date {
    color: #666;
    font-size: 14px;
}

.rep-grid-3 {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.rep-card {
    background: #F8F9FA;
    padding: 20px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid #eee;
}

.rep-card-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #666;
    margin-bottom: 5px;
}

.rep-card-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--secondary-color);
}

.rep-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 15px;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.rep-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
    margin-bottom: 30px;
}

.rep-table th {
    text-align: left;
    padding: 10px;
    background: #f0f0f0;
    font-weight: 600;
    color: #333;
    border-radius: 4px;
}

.rep-table td {
    padding: 10px;
    border-bottom: 1px solid #f0f0f0;
    color: #333;
}

.rep-table tr:last-child td {
    border-bottom: none;
}

.rep-footer {
    margin-top: 40px;
    text-align: center;
    font-size: 12px;
    color: #888;
    border-top: 1px solid #eee;
    padding-top: 20px;
}

.rep-bal-pos {
    color: var(--success-color);
    font-weight: 600;
}

.rep-bal-neg {
    color: var(--error-color);
    font-weight: 600;
}

.rep-bal-neu {
    color: #888;
}

/* Auth Button Styles */
.auth-button {
    position: fixed;
    top: var(--spacing-large);
    right: var(--spacing-large);
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 8px 20px;
    font-family: var(--font-family);
    color: var(--secondary-color);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
    z-index: 200;
    font-size: 14px;
    font-weight: 600;
}

.auth-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.user-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--secondary-color);
    font-size: 12px;
}

/* Login Modal Specific Styles */
#login-modal .form-group {
    margin-bottom: var(--spacing-medium);
}

#login-modal .error-message {
    color: var(--error-color);
    font-size: var(--caption-size);
    margin-top: 4px;
    display: none;
}

#login-modal .error-message.show {
    display: block;
}

.password-toggle {
    position: relative;
    width: 100%;
    display: flex;
    align-items: center;
}

.password-toggle .input-field {
    width: 100%;
    padding-right: 48px;
}

.password-toggle-btn {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color-secondary);
    padding: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color var(--transition-speed);
    z-index: 10;
    line-height: 0;
}

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

.password-toggle-btn svg {
    width: 20px;
    height: 20px;
    display: block;
}

.password-toggle-btn .eye-open {
    display: block;
}

.password-toggle-btn .eye-closed {
    display: none;
}

.password-toggle-btn.showing .eye-open {
    display: none;
}

.password-toggle-btn.showing .eye-closed {
    display: block;
}

.register-link {
    text-align: center;
    margin-top: var(--spacing-medium);
    font-size: var(--caption-size);
    color: var(--text-color-secondary);
}

.register-link a {
    color: var(--secondary-color);
    font-weight: 600;
    text-decoration: none;
}

.register-link a:hover {
    text-decoration: underline;
}

/* Footer Styles */
.main-footer {
    text-align: center;
    padding: var(--spacing-large) 0;
    margin-top: auto;
}

/* Support Button */
.support-button {
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    padding: 6px 20px 6px 6px;
    font-family: var(--font-family);
    color: var(--secondary-color);
    cursor: pointer;
    display: inline-flex;
    flex-direction: row;
    align-items: center;
    gap: 12px;
    box-shadow: var(--shadow-small);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed), border-color var(--transition-speed);
}

.support-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
}

.support-btn-text {
    font-size: 14px;
    font-weight: 600;
}

.support-btn-icon {
    font-size: 18px;
    line-height: 1;
    background-color: #FFF8E1;
    color: #FFB300;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid #FFE082;
}

/* Support Modal Specifics */
.support-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-medium);
    text-align: center;
}

.support-item {
    background: #f9f9f9;
    padding: var(--spacing-medium);
    border-radius: 12px;
    border: 1px solid #eee;
}

.support-label {
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.support-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.copy-icon-sm {
    cursor: pointer;
    color: #999;
    transition: color 0.2s;
}

.copy-icon-sm:hover {
    color: var(--primary-color);
}

.linkedin-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    color: #ffffff;
    background-color: #0077b5;
    text-decoration: none;
    font-weight: 600;
    padding: 10px 24px;
    border-radius: 8px;
    transition: background-color 0.2s, transform 0.2s;
    box-shadow: 0 2px 5px rgba(0, 119, 181, 0.3);
}

.linkedin-link:hover {
    background-color: #005582;
    text-decoration: none;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 119, 181, 0.4);
}

/* Mobile Responsiveness for Index Page */
@media (max-width: 768px) {
    body {
        padding: var(--spacing-medium);
        padding-bottom: 120px;
        padding-top: 70px;
    }

    .auth-button {
        top: 12px;
        right: 12px;
        padding: 6px 12px;
        font-size: 12px;
    }

    .user-avatar {
        width: 24px;
        height: 24px;
        font-size: 11px;
    }

    .main-header h1 {
        font-size: 20px;
    }

    .actions-toolbar {
        flex-direction: column;
        align-items: stretch;
        max-width: 100%;
        padding: 0;
        gap: var(--spacing-medium);
    }

    .add-member-form {
        width: 100%;
        max-width: none;
    }

    #transfer-button {
        width: 100%;
    }

    .summary-section {
        flex-direction: column;
        padding: 0;
    }

    .summary-card {
        max-width: 100%;
        width: 100%;
    }
}

@media (max-width: 540px) {
    .bottom-nav {
        flex-direction: column;
        gap: var(--spacing-small);
    }
}

@media (max-width: 480px) {
    :root {
        --headline-size: 20px;
        --subheadline-size: 16px;
        --body-size: 13px;
        --caption-size: 11px;
    }

    .add-member-form {
        flex-direction: column;
    }

    .cta-button {
        padding: 12px 20px;
        font-size: var(--body-size);
    }

    .modal-content {
        padding: var(--spacing-medium);
    }

    .support-btn-text {
        display: none;
    }

    .support-button {
        padding: 6px;
        width: 46px;
        height: 46px;
        border-radius: 50%;
        justify-content: center;
        gap: 0;
    }

    .bottom-nav {
        width: 90%;
        max-width: 400px;
        padding: 10px;
    }

    .bottom-nav .nav-button-group {
        justify-content: space-around;
        width: 100%;
    }

    .bottom-nav .cta-button span {
        display: none;
    }

    .bottom-nav .cta-button {
        padding: 0;
        width: 44px;
        height: 44px;
        border-radius: 50%;
        justify-content: center;
        gap: 0;
    }

    /* Mobile toast adjustments */
    .toast-container {
        right: 10px;
        max-width: calc(100vw - 20px);
    }

    .toast {
        max-width: 100%;
        min-width: 240px;
        padding: 12px;
    }
}