/* ===== Plantaio Premium Mobile UI ===== */
/* Version 2.0 - Refined, Modern, Performance-Optimized */

/* ===== CSS Variables - Premium Green Theme ===== */
:root {
    /* Primary palette - sophisticated greens */
    --color-primary: #1e5631;
    --color-primary-light: #3a7d44;
    --color-primary-dark: #0d3320;
    --color-primary-gradient: linear-gradient(145deg, #2d6a4f 0%, #1e5631 100%);
    
    /* Secondary palette - soft botanical */
    --color-secondary: #a7d7c5;
    --color-secondary-light: #d4edda;
    --color-accent: #69b578;
    --color-accent-soft: rgba(105, 181, 120, 0.15);
    
    /* Neutral palette */
    --color-background: #f8faf9;
    --color-surface: #ffffff;
    --color-surface-elevated: #ffffff;
    --color-border: rgba(30, 86, 49, 0.08);
    
    /* Text colors */
    --color-text: #1a2e1f;
    --color-text-secondary: #4a6550;
    --color-text-tertiary: #7a9680;
    --color-text-inverse: #ffffff;
    
    /* Semantic colors */
    --color-error: #c53030;
    --color-error-soft: rgba(197, 48, 48, 0.1);
    --color-warning: #d69e2e;
    --color-warning-soft: rgba(214, 158, 46, 0.15);
    --color-success: #38a169;
    --color-success-soft: rgba(56, 161, 105, 0.15);
    
    /* Shadows - softer, more natural */
    --shadow-xs: 0 1px 2px rgba(30, 86, 49, 0.04);
    --shadow-sm: 0 2px 4px rgba(30, 86, 49, 0.06), 0 1px 2px rgba(30, 86, 49, 0.04);
    --shadow-md: 0 4px 12px rgba(30, 86, 49, 0.08), 0 2px 4px rgba(30, 86, 49, 0.04);
    --shadow-lg: 0 8px 24px rgba(30, 86, 49, 0.10), 0 4px 8px rgba(30, 86, 49, 0.06);
    --shadow-xl: 0 16px 48px rgba(30, 86, 49, 0.12), 0 8px 16px rgba(30, 86, 49, 0.08);
    --shadow-inner: inset 0 2px 4px rgba(30, 86, 49, 0.04);
    
    /* Border radius - more rounded, friendly */
    --radius-xs: 6px;
    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    --radius-full: 9999px;
    
    /* Spacing - harmonious scale */
    --spacing-2xs: 0.125rem;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-sans: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    
    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-back: cubic-bezier(0.34, 1.56, 0.64, 1);
    --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
    --duration-fast: 150ms;
    --duration-normal: 250ms;
    --duration-slow: 400ms;
    
    /* Z-index scale */
    --z-base: 0;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-modal: 300;
    --z-toast: 400;
}

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

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

body {
    font-family: var(--font-sans);
    font-weight: var(--font-weight-normal);
    background: var(--color-background);
    color: var(--color-text);
    min-height: 100dvh;
    line-height: 1.6;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    overscroll-behavior-y: contain;
}

/* ===== App Container ===== */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    max-width: 500px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    padding-top: calc(var(--spacing-lg) + env(safe-area-inset-top));
    padding-bottom: calc(88px + env(safe-area-inset-bottom));
    animation: fadeIn var(--duration-slow) var(--ease-out-expo);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ===== Header ===== */
.app-header {
    text-align: center;
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    animation: slideDown var(--duration-slow) var(--ease-out-expo);
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}

.app-logo {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: inline-block;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(30, 86, 49, 0.15));
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-6px); }
}

.app-title {
    font-size: 1.875rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0;
    letter-spacing: -0.03em;
    background: var(--color-primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border: none;
    outline: none;
    -webkit-text-stroke: 0;
    text-shadow: none;
    box-decoration-break: clone;
    -webkit-box-decoration-break: clone;
}

.app-title:focus,
.app-title:focus-visible,
.app-title:active {
    outline: none;
    border: none;
}

.app-subtitle {
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    letter-spacing: 0.01em;
}

/* ===== Cards ===== */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--color-border);
    transition: transform var(--duration-normal) var(--ease-out-expo), box-shadow var(--duration-normal) var(--ease-out-expo);
    animation: cardEnter var(--duration-slow) var(--ease-out-expo) backwards;
    will-change: transform;
}

.card:nth-child(1) { animation-delay: 0ms; }
.card:nth-child(2) { animation-delay: 80ms; }
.card:nth-child(3) { animation-delay: 160ms; }
.card:nth-child(4) { animation-delay: 240ms; }

@keyframes cardEnter {
    from { opacity: 0; transform: translateY(20px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.card:active {
    transform: scale(0.985);
    box-shadow: var(--shadow-sm);
}

.card-title {
    font-size: 1.0625rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.card-title span { font-size: 1.25rem; }

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: -0.01em;
    cursor: pointer;
    transition: transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo), background var(--duration-fast) var(--ease-in-out);
    -webkit-appearance: none;
    appearance: none;
    position: relative;
    overflow: hidden;
    will-change: transform;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at center, rgba(255,255,255,0.3) 0%, transparent 70%);
    opacity: 0;
    transform: scale(0);
    transition: opacity var(--duration-normal) var(--ease-out-expo), transform var(--duration-slow) var(--ease-out-expo);
}

.btn:active::after { opacity: 1; transform: scale(2.5); }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; transform: none; }
.btn:disabled::after { display: none; }

.btn-primary {
    background: var(--color-primary-gradient);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255,255,255,0.15);
}

.btn-secondary {
    background: var(--color-secondary-light);
    color: var(--color-primary);
    box-shadow: var(--shadow-sm);
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:active { background: var(--color-accent-soft); }

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: 1.0625rem;
    border-radius: var(--radius-lg);
}

.btn-icon { font-size: 1.25rem; flex-shrink: 0; }

/* ===== Image Capture ===== */
.capture-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    animation: fadeInUp var(--duration-slow) var(--ease-out-expo);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

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

.capture-buttons .btn:first-child {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: var(--shadow-md), 0 0 0 0 rgba(30, 86, 49, 0.3); }
    50% { box-shadow: var(--shadow-lg), 0 0 0 12px rgba(30, 86, 49, 0); }
}

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

/* ===== Image Preview ===== */
.preview-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    animation: scaleIn var(--duration-slow) var(--ease-out-back);
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.preview-image-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-lg);
}

.preview-image-wrapper::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    box-shadow: inset 0 0 0 1px rgba(255,255,255,0.1);
    pointer-events: none;
    z-index: 1;
}

.preview-image {
    width: 100%;
    height: auto;
    max-height: 55vh;
    object-fit: contain;
    display: block;
}

.preview-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.preview-actions .btn { flex: 1; }

/* ===== Loading State ===== */
.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    gap: var(--spacing-lg);
    min-height: 300px;
    animation: fadeIn var(--duration-slow) var(--ease-out-expo);
}

.loading-spinner {
    width: 56px;
    height: 56px;
    border: 3px solid var(--color-secondary);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    box-shadow: var(--shadow-sm);
}

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

.loading-text {
    font-size: 1.125rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    text-align: center;
}

.loading-tips {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    text-align: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-accent-soft);
    border-radius: var(--radius-md);
}

/* ===== Results ===== */
.result-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.plant-name {
    font-size: 1.75rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0;
    letter-spacing: -0.03em;
    line-height: 1.2;
}

.scientific-name {
    font-size: 0.9375rem;
    font-style: italic;
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.plant-description {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-sm);
}

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

.care-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--color-background);
    border-radius: var(--radius-md);
    transition: background var(--duration-fast) var(--ease-in-out), transform var(--duration-fast) var(--ease-out-expo);
}

.care-item:active {
    background: var(--color-secondary-light);
    transform: scale(0.99);
}

.care-icon {
    font-size: 1.375rem;
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.care-content { flex: 1; min-width: 0; }

.care-label {
    font-size: 0.6875rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.care-text {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-2xs);
    line-height: 1.5;
}

.fun-facts {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.fun-fact {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-secondary-light) 0%, var(--color-secondary) 100%);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    line-height: 1.5;
    color: var(--color-primary-dark);
    box-shadow: var(--shadow-xs);
    transition: transform var(--duration-fast) var(--ease-out-expo);
}

.fun-fact:active { transform: scale(0.98); }
.fun-fact-icon { flex-shrink: 0; }

/* ===== Result Actions ===== */
.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.result-actions .btn { flex: 1; }

/* ===== Save Message ===== */
.save-message {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-medium);
    animation: slideInBounce var(--duration-slow) var(--ease-out-back);
}

@keyframes slideInBounce {
    from { opacity: 0; transform: translateY(-16px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.save-message-success {
    background: var(--color-success-soft);
    color: var(--color-success);
    border: 1px solid rgba(56, 161, 105, 0.2);
}

.save-message-error {
    background: var(--color-warning-soft);
    color: var(--color-warning);
    border: 1px solid rgba(214, 158, 46, 0.2);
}

/* ===== Suggestions ===== */
.suggestions-container {
    text-align: center;
    padding: var(--spacing-lg);
}

.suggestions-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    animation: shake 0.6s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: rotate(0); }
    25% { transform: rotate(-8deg); }
    75% { transform: rotate(8deg); }
}

.suggestions-title {
    font-size: 1.375rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-warning);
    margin-bottom: var(--spacing-sm);
}

.suggestions-summary {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.suggestions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: left;
}

.suggestion-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--color-warning-soft);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    color: var(--color-text);
    border: 1px solid rgba(214, 158, 46, 0.15);
    animation: listItemEnter var(--duration-normal) var(--ease-out-expo) backwards;
}

.suggestion-item:nth-child(1) { animation-delay: 100ms; }
.suggestion-item:nth-child(2) { animation-delay: 200ms; }
.suggestion-item:nth-child(3) { animation-delay: 300ms; }
.suggestion-item:nth-child(4) { animation-delay: 400ms; }

@keyframes listItemEnter {
    from { opacity: 0; transform: translateX(-12px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ===== Error State ===== */
.error-container {
    text-align: center;
    padding: var(--spacing-xl);
}

.error-icon { font-size: 3.5rem; margin-bottom: var(--spacing-md); }
.error-message { font-size: 1rem; color: var(--color-error); margin-bottom: var(--spacing-lg); }

/* ===== Storage Warning ===== */
.storage-warning {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-warning-soft) 0%, rgba(214, 158, 46, 0.08) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(214, 158, 46, 0.15);
    animation: fadeInUp var(--duration-slow) var(--ease-out-expo);
}

.storage-warning-icon { font-size: 1.375rem; flex-shrink: 0; }

.storage-warning-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ===== Bottom Navigation ===== */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 -1px 0 var(--color-border), var(--shadow-lg);
    padding: var(--spacing-sm) var(--spacing-md);
    padding-bottom: calc(var(--spacing-sm) + env(safe-area-inset-bottom));
    z-index: var(--z-sticky);
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-2xs);
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    color: var(--color-text-tertiary);
    border-radius: var(--radius-md);
    transition: color var(--duration-fast) var(--ease-in-out), background var(--duration-fast) var(--ease-in-out), transform var(--duration-fast) var(--ease-out-expo);
}

.nav-item:active {
    transform: scale(0.95);
    background: var(--color-accent-soft);
}

.nav-item-active { color: var(--color-primary); }
.nav-item-active .nav-icon { transform: scale(1.1); }

.nav-icon {
    font-size: 1.5rem;
    transition: transform var(--duration-normal) var(--ease-out-back);
}

.nav-label {
    font-size: 0.6875rem;
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

/* ===== Saved Plants List ===== */
.saved-plants-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: calc(88px + var(--spacing-md));
}

.saved-plant-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: transform var(--duration-fast) var(--ease-out-expo), box-shadow var(--duration-fast) var(--ease-out-expo);
    animation: listItemEnter var(--duration-normal) var(--ease-out-expo) backwards;
}

.saved-plant-card:nth-child(1) { animation-delay: 0ms; }
.saved-plant-card:nth-child(2) { animation-delay: 50ms; }
.saved-plant-card:nth-child(3) { animation-delay: 100ms; }
.saved-plant-card:nth-child(4) { animation-delay: 150ms; }
.saved-plant-card:nth-child(5) { animation-delay: 200ms; }

.saved-plant-card:active {
    transform: scale(0.98);
    box-shadow: var(--shadow-md);
}

.saved-plant-info { flex: 1; min-width: 0; }

.saved-plant-name {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.saved-plant-scientific {
    font-size: 0.8125rem;
    font-style: italic;
    color: var(--color-text-tertiary);
    margin: var(--spacing-2xs) 0 0 0;
}

.saved-plant-date {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
    margin: var(--spacing-xs) 0 0 0;
    font-weight: var(--font-weight-medium);
}

.saved-plant-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-icon-only {
    background: none;
    border: none;
    font-size: 1.25rem;
    padding: var(--spacing-sm);
    cursor: pointer;
    opacity: 0.5;
    transition: opacity var(--duration-fast) var(--ease-in-out), transform var(--duration-fast) var(--ease-out-expo);
    border-radius: var(--radius-sm);
}

.btn-icon-only:active { opacity: 1; transform: scale(1.1); }

.chevron {
    font-size: 1.25rem;
    color: var(--color-text-tertiary);
    opacity: 0.5;
}

.saved-plants-footer {
    text-align: center;
    padding: var(--spacing-lg);
    margin-bottom: calc(88px + var(--spacing-md));
}

.plant-count {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    margin: 0;
    font-weight: var(--font-weight-medium);
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-xl);
    animation: fadeInUp var(--duration-slow) var(--ease-out-expo);
}

.empty-state-icon {
    font-size: 4.5rem;
    margin-bottom: var(--spacing-lg);
    animation: float 3s ease-in-out infinite;
}

.empty-state-title {
    font-size: 1.375rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0 0 var(--spacing-sm) 0;
}

.empty-state-text {
    font-size: 1rem;
    color: var(--color-text-secondary);
    margin: 0 0 var(--spacing-xl) 0;
    line-height: 1.6;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(26, 46, 31, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    z-index: var(--z-modal);
    animation: fadeIn var(--duration-fast) var(--ease-out-expo);
}

.modal-content {
    background: var(--color-background);
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    width: 100%;
    max-width: 500px;
    max-height: 92vh;
    overflow-y: auto;
    overscroll-behavior: contain;
    animation: modalSlideUp var(--duration-slow) var(--ease-out-expo);
    position: relative;
    box-shadow: var(--shadow-xl);
}

@keyframes modalSlideUp {
    from { transform: translateY(100%); opacity: 0.5; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-content::before {
    content: '';
    position: sticky;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    display: block;
    width: 36px;
    height: 4px;
    background: var(--color-border);
    border-radius: var(--radius-full);
    margin: var(--spacing-sm) auto var(--spacing-md);
}

.modal-close {
    position: sticky;
    top: var(--spacing-sm);
    float: right;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    z-index: 10;
    margin-right: var(--spacing-md);
    transition: transform var(--duration-fast) var(--ease-out-expo);
}

.modal-close:active { transform: scale(0.9); }

.modal-body {
    padding: var(--spacing-lg);
    padding-top: 0;
}

.modal-body .card { margin-bottom: var(--spacing-md); animation: none; }
.modal-body .plant-name { margin-top: 0; }

/* ===== Install Banner ===== */
.install-banner {
    position: fixed;
    bottom: calc(76px + env(safe-area-inset-bottom));
    left: var(--spacing-md);
    right: var(--spacing-md);
    max-width: 468px;
    margin: 0 auto;
    background: var(--color-surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-lg);
    z-index: var(--z-dropdown);
    border: 1px solid var(--color-border);
    animation: installBannerEnter var(--duration-slow) var(--ease-out-back);
}

@keyframes installBannerEnter {
    from { opacity: 0; transform: translateY(24px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.install-banner-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.install-banner-icon {
    font-size: 2.75rem;
    flex-shrink: 0;
    animation: float 3s ease-in-out infinite;
}

.install-banner-text {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xs);
}

.install-banner-text strong {
    font-size: 1.0625rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.install-banner-text span {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.install-banner-actions { display: flex; gap: var(--spacing-sm); }

.install-btn-dismiss {
    flex: 1;
    padding: var(--spacing-md);
    background: transparent;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: border-color var(--duration-fast) var(--ease-in-out);
}

.install-btn-dismiss:active { border-color: var(--color-text-tertiary); }

.install-btn-primary {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--color-primary-gradient);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-inverse);
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--duration-fast) var(--ease-out-expo);
}

.install-btn-primary:active { transform: scale(0.97); }

/* ===== Utilities ===== */
.text-center { text-align: center; }
.mt-auto { margin-top: auto; }

/* ===== Reduce Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    html { scroll-behavior: auto; }
}

/* ===== Performance ===== */
.app-container, .card, .btn, .nav-item, .saved-plant-card, .modal-content {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* ===== Blazor Styles ===== */
.valid.modified:not([type=checkbox]) { outline: 1px solid var(--color-success); }
.invalid { outline: 1px solid var(--color-error); }
.validation-message { color: var(--color-error); font-size: 0.875rem; margin-top: var(--spacing-xs); }

#blazor-error-ui {
    background: var(--color-error-soft);
    border-top: 2px solid var(--color-error);
    bottom: 0;
    box-shadow: var(--shadow-lg);
    display: none;
    left: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    position: fixed;
    width: 100%;
    z-index: var(--z-toast);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: var(--spacing-md);
    top: var(--spacing-sm);
    font-size: 1.25rem;
    opacity: 0.6;
}

.blazor-error-boundary {
    background: var(--color-error-soft);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    color: var(--color-error);
}

.blazor-error-boundary::after { content: "An error has occurred."; }

/* ===== Loading Progress ===== */
.loading-progress {
    position: absolute;
    display: block;
    width: 7rem;
    height: 7rem;
    inset: 30vh 0 auto 0;
    margin: 0 auto;
    filter: drop-shadow(0 4px 8px rgba(30, 86, 49, 0.15));
}

.loading-progress circle {
    fill: none;
    stroke: var(--color-secondary);
    stroke-width: 0.5rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:last-child {
    stroke: var(--color-primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.1s ease-in-out;
}

.loading-progress-text {
    position: absolute;
    inset: calc(30vh + 2.75rem) 0 auto 0;
    text-align: center;
    font-weight: var(--font-weight-semibold);
    font-size: 0.9375rem;
    color: var(--color-primary);
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading");
}