/* ===================================
   Disc Golf Tracker - CSS Styles
   Mobile-first responsive design
   =================================== */

/* CSS Custom Properties (Variables) */
:root {
    /* Colors - Dark Mode Theme */
    --color-primary: #6366f1;
    --color-primary-dark: #4f46e5;
    --color-primary-light: #818cf8;
    --color-secondary: #22d3ee;

    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-info: #38bdf8;

    /* Dark mode base colors */
    --color-white: #f8fafc;
    --color-black: #000000;
    --color-gray-100: #1e1e2e;
    --color-gray-200: #262637;
    --color-gray-300: #313244;
    --color-gray-400: #45475a;
    --color-gray-500: #6c7086;
    --color-gray-600: #9399b2;
    --color-gray-700: #bac2de;
    --color-gray-800: #cdd6f4;
    --color-gray-900: #f8fafc;

    /* Background colors */
    --color-bg-primary: #0f0f1a;
    --color-bg-secondary: #1a1a2e;
    --color-bg-card: #1e1e2e;
    --color-bg-input: #262637;

    /* Score Colors - Bright for dark backgrounds */
    --color-eagle: #38bdf8;
    --color-birdie: #34d399;
    --color-par: #9399b2;
    --color-bogey: #fbbf24;
    --color-double-bogey: #f87171;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 2rem;      /* 32px */
    --font-size-4xl: 2.5rem;    /* 40px */

    /* Spacing */
    --spacing-xs: 0.25rem;      /* 4px */
    --spacing-sm: 0.5rem;       /* 8px */
    --spacing-md: 1rem;         /* 16px */
    --spacing-lg: 1.5rem;       /* 24px */
    --spacing-xl: 2rem;         /* 32px */
    --spacing-2xl: 3rem;        /* 48px */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);

    /* Touch Targets (minimum 44x44px) */
    --touch-target: 44px;
    --touch-target-lg: 56px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Z-index layers */
    --z-base: 1;
    --z-header: 100;
    --z-modal: 200;
    --z-toast: 300;
    --z-loading: 400;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-900);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

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

/* ===================================
   Layout Components
   =================================== */
#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 428px;
    margin: 0 auto;
    background-color: var(--color-bg-secondary);
}

/* Header */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-primary);
    color: var(--color-white);
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    min-height: 56px;
    box-shadow: var(--shadow-md);
}

.header-left,
.header-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    min-width: 48px;
}

.header-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    flex: 1;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow-y: auto;
    overflow-x: hidden;
}

/* Screens */
.screen {
    display: none;
    flex: 1;
    flex-direction: column;
}

.screen.active {
    display: flex;
}

.screen-content {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-family: inherit;
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    min-height: var(--touch-target);
    -webkit-appearance: none;
    appearance: none;
}

.btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(45, 90, 39, 0.3);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled),
.btn-primary:active:not(:disabled) {
    background-color: var(--color-primary-dark);
}

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

.btn-secondary:hover:not(:disabled),
.btn-secondary:active:not(:disabled) {
    background-color: var(--color-primary);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover:not(:disabled),
.btn-outline:active:not(:disabled) {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-danger {
    border-color: var(--color-danger);
    color: var(--color-danger);
}

.btn-danger:hover:not(:disabled),
.btn-danger:active:not(:disabled) {
    background-color: var(--color-danger);
    color: var(--color-white);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
    min-height: var(--touch-target-lg);
    width: 100%;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    color: inherit;
    transition: background-color var(--transition-fast);
}

.btn-icon:hover,
.btn-icon:active {
    background-color: rgba(255, 255, 255, 0.1);
}

.btn-icon:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.btn-icon.hidden {
    visibility: hidden;
}

/* Stepper Buttons */
.btn-stepper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target);
    height: var(--touch-target);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    background-color: var(--color-gray-300);
    color: var(--color-gray-900);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
    user-select: none;
}

.btn-stepper:hover,
.btn-stepper:active {
    background-color: var(--color-gray-400);
}

.btn-stepper.large {
    width: var(--touch-target-lg);
    height: var(--touch-target-lg);
    font-size: var(--font-size-3xl);
}

/* ===================================
   Form Elements
   =================================== */
.form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-gray-700);
}

.optional {
    font-weight: 400;
    color: var(--color-gray-500);
}

input[type="text"],
input[type="number"] {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: inherit;
    font-size: var(--font-size-lg);
    border: 2px solid var(--color-gray-400);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-input);
    color: var(--color-gray-900);
    min-height: var(--touch-target);
    transition: border-color var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

input[type="text"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--color-primary-light);
}

input[type="text"].error,
input[type="number"].error {
    border-color: var(--color-danger);
}

input[type="number"] {
    text-align: center;
    -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.number-input-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.number-input-group input {
    flex: 1;
    min-width: 60px;
    max-width: 100px;
}

.number-input-group.large input {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    min-height: var(--touch-target-lg);
}

.error-message {
    font-size: var(--font-size-sm);
    color: var(--color-danger);
    min-height: 1.2em;
}

/* ===================================
   Home Screen
   =================================== */
.home-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-xl);
    min-height: calc(100vh - 56px);
    text-align: center;
}

.logo-section {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.app-logo {
    margin-bottom: var(--spacing-md);
}

.logo-section h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.tagline {
    font-size: var(--font-size-base);
    color: var(--color-gray-600);
}

.auth-section {
    width: 100%;
    max-width: 300px;
    margin-bottom: var(--spacing-lg);
}

.auth-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-top: var(--spacing-sm);
}

.main-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 300px;
}

.offline-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-warning);
    color: var(--color-gray-900);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-top: var(--spacing-lg);
}

/* ===================================
   Course Selection Screen
   =================================== */
.course-select-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.course-select-header h2 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-xs);
}

.course-select-header p {
    color: var(--color-gray-600);
}

.course-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.course-card {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    background-color: var(--color-bg-card);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
}

.course-card:hover,
.course-card:focus {
    border-color: var(--color-primary-light);
    box-shadow: var(--shadow-md);
}

.create-course-card {
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-style: dashed;
    color: var(--color-primary-light);
}

.course-card-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.course-card-details {
    display: flex;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-gray-600);
}

/* ===================================
   Scoring Screen
   =================================== */
.scoring-screen {
    padding-bottom: 80px;
}

.hole-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    margin-bottom: var(--spacing-md);
}

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

#current-hole-label {
    display: block;
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

#hole-count-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

/* Hole Info */
.hole-info {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.info-chip {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-md);
}

.info-label {
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
    text-transform: uppercase;
}

.info-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

/* Stats Section */
.stats-section {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stats-section h3 {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
}

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

.stat-label {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-gray-600);
}

.stat-value {
    display: block;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary);
}

/* Hole Setup */
.hole-setup {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.hole-setup h3 {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.setup-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.setup-grid .number-input-group {
    justify-content: center;
}

.setup-grid input[type="number"] {
    max-width: 80px;
}

/* Score Entry */
.score-entry {
    background-color: var(--color-bg-card);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.score-entry h3 {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.score-input-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.score-group {
    align-items: center;
}

.score-group .number-input-group {
    justify-content: center;
}

.score-relative {
    font-size: var(--font-size-lg);
    font-weight: 700;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
    margin-top: var(--spacing-sm);
}

.score-relative.eagle {
    background-color: var(--color-eagle);
    color: var(--color-white);
}

.score-relative.birdie {
    background-color: var(--color-birdie);
    color: var(--color-white);
}

.score-relative.par {
    background-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.score-relative.bogey {
    background-color: var(--color-bogey);
    color: var(--color-white);
}

.score-relative.double-bogey {
    background-color: var(--color-double-bogey);
    color: var(--color-white);
}

.detail-scores {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.detail-scores .form-group {
    align-items: center;
}

.detail-scores .number-input-group {
    justify-content: center;
}

.detail-scores input {
    max-width: 60px;
}

/* Validation Warning */
.validation-warning {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(255, 193, 7, 0.2);
    border: 1px solid var(--color-warning);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-gray-800);
}

/* Bottom Action Bar */
.bottom-action {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 428px;
    padding: var(--spacing-md);
    background-color: var(--color-bg-card);
    border-top: 1px solid var(--color-gray-300);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.3);
    z-index: var(--z-base);
}

/* ===================================
   Round Summary Screen
   =================================== */
.summary-header {
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.check-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: var(--color-success);
    border-radius: 50%;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.summary-header h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-gray-900);
}

.summary-card {
    background-color: var(--color-bg-card);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.summary-course-name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
    margin-bottom: var(--spacing-xs);
}

.summary-date {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-lg);
}

.summary-score {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.total-score {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.relative-score {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-full);
}

.relative-score.under-par {
    background-color: var(--color-birdie);
    color: var(--color-white);
}

.relative-score.even-par {
    background-color: var(--color-gray-300);
    color: var(--color-gray-700);
}

.relative-score.over-par {
    background-color: var(--color-bogey);
    color: var(--color-white);
}

.summary-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

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

.detail-label {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
}

.detail-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-gray-900);
}

.summary-comparison {
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.summary-comparison h3 {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.comparison-result {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.comparison-result.better {
    color: var(--color-success);
}

.comparison-result.worse {
    color: var(--color-danger);
}

.summary-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.highlight-section h4 {
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
}

.highlight-list {
    font-size: var(--font-size-sm);
}

.highlight-item {
    padding: var(--spacing-xs) 0;
}

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

/* ===================================
   Modals
   =================================== */
.modal {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: var(--z-modal);
    padding: var(--spacing-md);
}

.modal-content {
    width: 100%;
    max-width: 400px;
    max-height: 90vh;
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal-small {
    padding: var(--spacing-lg);
    text-align: center;
}

.modal-small h2 {
    margin-bottom: var(--spacing-md);
}

.modal-small p {
    margin-bottom: var(--spacing-lg);
    color: var(--color-gray-600);
}

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

.modal-header h2 {
    font-size: var(--font-size-lg);
}

.modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

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

/* Scorecard Table */
.scorecard-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.scorecard-table th,
.scorecard-table td {
    padding: var(--spacing-sm);
    text-align: center;
    border-bottom: 1px solid var(--color-gray-300);
}

.scorecard-table th {
    background-color: var(--color-gray-200);
    font-weight: 600;
    font-size: var(--font-size-xs);
    text-transform: uppercase;
}

.scorecard-table tfoot td {
    font-weight: 700;
    background-color: var(--color-gray-200);
    border-top: 2px solid var(--color-gray-400);
}

/* ===================================
   Sync Status
   =================================== */
.sync-status {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
}

.sync-status.syncing svg {
    animation: spin 1s linear infinite;
}

.sync-status.error {
    color: var(--color-danger);
}

.sync-status.success {
    color: var(--color-success);
}

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

/* ===================================
   Loading Overlay
   =================================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(15, 15, 26, 0.9);
    z-index: var(--z-loading);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--color-gray-300);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: var(--spacing-md);
}

/* ===================================
   Toast Notifications
   =================================== */
.toast-container {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 380px;
    padding: 0 var(--spacing-md);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    pointer-events: none;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background-color: var(--color-gray-300);
    color: var(--color-gray-900);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: slideUp 0.3s ease;
}

.toast.success {
    background-color: var(--color-success);
    color: var(--color-bg-primary);
}

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

.toast.warning {
    background-color: var(--color-warning);
    color: var(--color-bg-primary);
}

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

/* ===================================
   Legal Footer & Pages
   =================================== */
.legal-footer {
    margin-top: auto;
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-sm);
    width: 100%;
}

.legal-link {
    color: var(--color-gray-500);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.legal-link:hover,
.legal-link:focus {
    color: var(--color-primary-light);
    text-decoration: underline;
}

.legal-separator {
    color: var(--color-gray-500);
    margin: 0 var(--spacing-sm);
}

.legal-content {
    padding-bottom: var(--spacing-2xl);
}

.legal-content h2 {
    font-size: var(--font-size-2xl);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.legal-updated {
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-xl);
}

.legal-section {
    margin-bottom: var(--spacing-lg);
}

.legal-section h3 {
    font-size: var(--font-size-lg);
    color: var(--color-gray-800);
    margin-bottom: var(--spacing-sm);
}

.legal-section h4 {
    font-size: var(--font-size-base);
    color: var(--color-gray-700);
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
}

.legal-section p {
    color: var(--color-gray-600);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.legal-section ul {
    color: var(--color-gray-600);
    margin-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.legal-section li {
    margin-bottom: var(--spacing-xs);
    line-height: 1.6;
}

.legal-section a {
    color: var(--color-primary-light);
    text-decoration: none;
}

.legal-section a:hover,
.legal-section a:focus {
    text-decoration: underline;
}

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

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

/* ===================================
   Responsive Adjustments
   =================================== */
@media (min-width: 428px) {
    #app {
        box-shadow: var(--shadow-xl);
    }
}

/* Larger screens - tablets */
@media (min-width: 768px) {
    :root {
        --font-size-base: 1.125rem;
    }

    #app {
        margin-top: 2rem;
        margin-bottom: 2rem;
        border-radius: var(--radius-xl);
        overflow: hidden;
        min-height: calc(100vh - 4rem);
    }
}

/* Dark mode is now the default theme */

/* ===================================
   Setup Wizard Styles
   =================================== */
.setup-wizard {
    max-width: 400px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    text-align: center;
}

.setup-header {
    margin-bottom: var(--spacing-xl);
}

.setup-header .app-logo {
    margin-bottom: var(--spacing-md);
}

.setup-header h2 {
    color: var(--color-gray-900);
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.setup-intro {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
}

.setup-steps {
    text-align: left;
    padding: var(--spacing-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    list-style-position: inside;
    counter-reset: step;
    list-style: none;
}

.setup-steps li {
    padding: var(--spacing-sm) 0;
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    position: relative;
    padding-left: var(--spacing-xl);
}

.setup-steps li::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    left: 0;
    top: var(--spacing-sm);
    width: 24px;
    height: 24px;
    background: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 600;
}

.service-email {
    display: block;
    margin: var(--spacing-sm) 0;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-bg-input);
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: var(--font-size-xs);
    color: var(--color-primary-light);
    word-break: break-all;
    user-select: all;
    cursor: text;
}

.share-note {
    color: var(--color-gray-500);
    font-size: var(--font-size-xs);
    font-style: italic;
}

.setup-hint {
    display: block;
    color: var(--color-gray-500);
    font-size: var(--font-size-xs);
    margin-top: var(--spacing-xs);
}

.setup-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.setup-input-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-gray-400);
    border-radius: var(--radius-md);
    color: var(--color-gray-900);
    font-size: var(--font-size-base);
}

.setup-input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.setup-input-group input::placeholder {
    color: var(--color-gray-500);
}

.setup-status {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-md);
}

.setup-status.info {
    background: rgba(56, 189, 248, 0.1);
    color: var(--color-info);
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.setup-status.success {
    background: rgba(52, 211, 153, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(52, 211, 153, 0.3);
}

.setup-status.error {
    background: rgba(248, 113, 113, 0.1);
    color: var(--color-danger);
    border: 1px solid rgba(248, 113, 113, 0.3);
}

/* ===================================
   Settings Screen Styles
   =================================== */
.settings-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.settings-link:hover,
.settings-link:focus {
    color: var(--color-gray-800);
}

.settings-link svg {
    opacity: 0.7;
}

.settings-section {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.settings-section h3 {
    color: var(--color-gray-900);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--color-gray-400);
}

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

.connection-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.status-badge.connected {
    background: rgba(52, 211, 153, 0.15);
    color: var(--color-success);
}

.status-badge.disconnected {
    background: rgba(248, 113, 113, 0.15);
    color: var(--color-danger);
}

.sheet-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-primary-light);
    font-size: var(--font-size-sm);
    text-decoration: none;
    padding: var(--spacing-sm) 0;
}

.sheet-link:hover,
.sheet-link:focus {
    color: var(--color-primary);
    text-decoration: underline;
}

.settings-edit {
    margin-top: var(--spacing-md);
}

.settings-edit-note {
    color: var(--color-gray-700);
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-sm);
}

.settings-input-group {
    margin: var(--spacing-md) 0;
}

.settings-input-group input {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--color-bg-input);
    border: 1px solid var(--color-gray-400);
    border-radius: var(--radius-md);
    color: var(--color-gray-900);
    font-size: var(--font-size-base);
}

.settings-input-group input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.settings-input-group input::placeholder {
    color: var(--color-gray-500);
}

.settings-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.settings-actions button {
    flex: 1;
}

.settings-about {
    color: var(--color-gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

.settings-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
}