/* ================================================
   RIGENERAMI - Design System
   Modern, eco-friendly design with glassmorphism
   ================================================ */

/* ===== CSS Variables ===== */
:root {
    /* Colors - Eco Green Palette */
    --primary: #2ecc71;
    --primary-dark: #27ae60;
    --primary-light: #a8e6cf;
    --secondary: #3498db;
    --secondary-dark: #2980b9;
    --accent: #9b59b6;
    --warning: #f39c12;
    --danger: #e74c3c;
    --success: #2ecc71;

    /* Neutrals - tema chiaro con testo nero */
    --dark: #1a1a2e;
    --dark-light: #2d3748;
    --gray-900: #1a202c;
    --gray-700: #4a5568;
    --gray-500: #718096;
    --gray-300: #a0aec0;
    --gray-100: #edf2f7;
    --white: #ffffff;
    --black: #000000;

    /* Backgrounds - tema chiaro */
    --bg-gradient: linear-gradient(135deg, #f7fafc 0%, #edf2f7 50%, #e2e8f0 100%);
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.9);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 30px rgba(46, 204, 113, 0.3);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Outfit', var(--font-primary);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
}

/* Light mode overrides */
@media (prefers-color-scheme: light) {
    :root {
        --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
        --bg-card: rgba(255, 255, 255, 0.9);
        --bg-glass: rgba(255, 255, 255, 0.7);
    }
}

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

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-gradient);
    background-attachment: fixed;
    color: var(--gray-900);
    line-height: 1.7;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Light mode body */
body.light-mode {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    color: var(--gray-900);
}

/* ===== Typography ===== */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-light);
}

/* ===== Glassmorphism Cards ===== */
.glass-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    color: var(--gray-900);
}

.glass-card-light {
    background: rgba(255, 255, 255, 0.95);
    color: var(--gray-900);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

/* ===== Container ===== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-sm {
    max-width: 600px;
}

.container-md {
    max-width: 800px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.4);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(46, 204, 113, 0.5);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-dark) 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.4);
}

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

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

.btn-block {
    width: 100%;
}

.btn-lg {
    padding: var(--spacing-lg) var(--spacing-2xl);
    font-size: 1.1rem;
}

.btn-sm {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-900);
    font-size: 0.95rem;
}

.form-label.required::after {
    content: ' *';
    color: var(--danger);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--gray-900);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(46, 204, 113, 0.2);
}

.form-control::placeholder {
    color: var(--gray-500);
}

.form-control.error {
    border-color: var(--danger);
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%235d6778' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: var(--spacing-2xl);
}

/* Checkbox & Radio */
.form-check {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-check-label {
    color: var(--gray-300);
    font-size: 0.95rem;
    line-height: 1.5;
}

.form-hint {
    font-size: 0.85rem;
    color: var(--gray-500);
    margin-top: var(--spacing-xs);
}

.form-error {
    font-size: 0.85rem;
    color: var(--danger);
    margin-top: var(--spacing-xs);
}

/* ===== Quantity Input ===== */
.quantity-input {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.quantity-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-sm);
    color: var(--white);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.quantity-value {
    width: 60px;
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    padding: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--gray-900);
}

/* ===== Device Category Cards ===== */
.device-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: var(--spacing-md);
}

.device-card {
    background: var(--bg-glass);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    min-width: 0;
}

.device-card:hover {
    border-color: var(--primary);
    transform: translateY(-4px);
}

.device-card.active {
    border-color: var(--primary);
    background: rgba(46, 204, 113, 0.15);
}

.device-card-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
}

.device-card-name {
    font-weight: 600;
    font-size: 0.95rem;
    overflow-wrap: anywhere;
}

/* ===== Alert Messages ===== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: rgba(46, 204, 113, 0.2);
    border: 1px solid var(--success);
    color: var(--success);
}

.alert-danger {
    background: rgba(231, 76, 60, 0.2);
    border: 1px solid var(--danger);
    color: var(--danger);
}

.alert-warning {
    background: rgba(243, 156, 18, 0.2);
    border: 1px solid var(--warning);
    color: var(--warning);
}

.alert-info {
    background: rgba(52, 152, 219, 0.2);
    border: 1px solid var(--secondary);
    color: var(--secondary);
}

/* ===== Header ===== */
.header {
    padding: var(--spacing-lg) 0;
    text-align: center;
}

.logo {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    font-size: 3rem;
}

/* ===== Page Hero ===== */
.hero {
    text-align: center;
    padding: var(--spacing-2xl) 0;
}

.hero h1 {
    font-size: 2.5rem;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
}

.hero h1 .hero-emoji {
    background: none;
    -webkit-text-fill-color: initial;
    color: inherit;
}

.hero p {
    font-size: 1.15rem;
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
}

/* ===== Progress Steps ===== */
.progress-steps {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-2xl);
}

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

.progress-step-number {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-glass);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
}

.progress-step.active .progress-step-number {
    background: var(--primary);
    border-color: var(--primary);
}

.progress-step.completed .progress-step-number {
    background: var(--success);
    border-color: var(--success);
}

.progress-step-label {
    font-size: 0.9rem;
    color: var(--gray-500);
    display: none;
}

@media (min-width: 768px) {
    .progress-step-label {
        display: block;
    }
}

.progress-step-line {
    width: 40px;
    height: 2px;
    background: rgba(255, 255, 255, 0.2);
}

/* ===== Upload Zone ===== */
.upload-zone {
    border: 2px dashed rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.upload-zone:hover {
    border-color: var(--primary);
    background: rgba(46, 204, 113, 0.05);
}

.upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(46, 204, 113, 0.1);
}

.upload-zone-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.upload-zone-text {
    color: var(--gray-300);
}

.upload-zone-text strong {
    color: var(--primary);
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding: var(--spacing-xl) 0;
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* ===== Animations ===== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

@keyframes glow {

    0%,
    100% {
        box-shadow: 0 0 20px rgba(46, 204, 113, 0.3);
    }

    50% {
        box-shadow: 0 0 40px rgba(46, 204, 113, 0.5);
    }
}

.animate-fadeIn {
    animation: fadeIn 0.6s ease-out;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

.animate-glow {
    animation: glow 2s infinite;
}

/* ===== Utilities ===== */
.text-center {
    text-align: center;
}

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

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

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

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

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

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

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

.text-muted {
    color: var(--gray-500);
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.d-flex {
    display: flex;
}

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

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

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

.justify-between {
    justify-content: space-between;
}

.gap-1 {
    gap: var(--spacing-sm);
}

.gap-2 {
    gap: var(--spacing-md);
}

.gap-3 {
    gap: var(--spacing-lg);
}

.hidden {
    display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .container {
        padding: 0 var(--spacing-md);
    }

    .glass-card {
        padding: var(--spacing-lg);
    }

    .device-categories {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Enhanced form controls for mobile */
    .form-control {
        padding: 14px 16px;
        font-size: 16px;
        /* Prevents zoom on iOS */
    }

    select.form-control {
        padding: 14px 40px 14px 16px;
    }

    /* Buttons - larger touch targets */
    .btn {
        padding: 14px 20px;
        font-size: 1rem;
        min-height: 48px;
    }

    .btn-lg {
        padding: 16px 24px;
        font-size: 1.1rem;
    }

    .btn-block {
        width: 100%;
    }

    /* Hero section */
    .hero {
        padding: var(--spacing-lg) 0;
    }

    .hero h1 {
        font-size: 1.8rem;
    }

    .hero p {
        font-size: 1rem;
    }

    /* Progress steps */
    .progress-steps {
        gap: var(--spacing-xs);
    }

    .progress-step-number {
        width: 32px;
        height: 32px;
        font-size: 0.85rem;
    }

    .progress-step-line {
        width: 20px;
    }

    /* Device cards */
    .device-card {
        padding: var(--spacing-md);
    }

    .device-card-icon {
        font-size: 2rem;
    }

    .device-card-name {
        font-size: 0.85rem;
    }

    /* Quantity input */
    .quantity-btn {
        width: 44px;
        height: 44px;
    }

    .quantity-value {
        width: 60px;
        font-size: 1rem;
    }

    /* Checkbox/radio - larger for touch */
    .form-check input[type="checkbox"],
    .form-check input[type="radio"] {
        width: 24px;
        height: 24px;
        min-width: 24px;
    }

    .form-check {
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .form-check-label {
        font-size: 0.9rem;
        line-height: 1.4;
    }

    /* Alerts */
    .alert {
        padding: var(--spacing-md);
        font-size: 0.9rem;
    }

    /* Footer */
    .footer {
        padding: var(--spacing-lg) 0;
        font-size: 0.85rem;
    }

    .footer p {
        margin-bottom: var(--spacing-sm);
    }
}

/* ===== Small Mobile (≤480px) ===== */
@media (max-width: 480px) {
    h1 {
        font-size: 1.6rem;
    }

    h2 {
        font-size: 1.3rem;
    }

    .container {
        padding: 0 12px;
    }

    .glass-card {
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }

    .device-categories {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-sm);
    }

    .device-card {
        padding: var(--spacing-sm);
    }

    .device-card-icon {
        font-size: 1.75rem;
    }

    .device-card-name {
        font-size: 0.8rem;
    }

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

    /* Form spacing */
    .form-group {
        margin-bottom: var(--spacing-md);
    }
}

/* ===== Touch Device Optimizations ===== */
@media (hover: none) and (pointer: coarse) {

    /* Minimum touch targets */
    .btn,
    .quantity-btn,
    a,
    button {
        min-height: 44px;
    }

    /* Disable hover animations on touch */
    .btn-primary:hover,
    .device-card:hover,
    .quick-action-btn:hover {
        transform: none;
    }

    /* Better link padding */
    a {
        padding: 2px 0;
    }

    /* Signature canvas - prevent scrolling while drawing */
    canvas {
        touch-action: none;
    }
}

/* ===== Loading Spinner ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--spacing-lg);
    z-index: 9999;
}

.loading-text {
    color: var(--white);
    font-size: 1.1rem;
}

/* ===== Safe Area Insets for Modern Phones ===== */
@supports (padding: max(0px)) {
    .container {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
    }

    .footer {
        padding-bottom: max(var(--spacing-lg), env(safe-area-inset-bottom));
    }
}

/* ===== Extra Responsive Hardening ===== */
img,
video,
svg,
canvas,
iframe {
    max-width: 100%;
    height: auto;
}

.glass-card,
.form-control {
    min-width: 0;
}

@media (max-width: 768px) {
    main [style*="display: grid"][style*="grid-template-columns"],
    main [style*="display:grid"][style*="grid-template-columns"] {
        display: block !important;
    }

    main [style*="display: grid"][style*="grid-template-columns"] > *,
    main [style*="display:grid"][style*="grid-template-columns"] > * {
        margin-bottom: var(--spacing-md);
    }

    main form[style*="display: flex"],
    main form[style*="display:flex"] {
        display: block !important;
    }

    main form[style*="display: flex"] > *,
    main form[style*="display:flex"] > * {
        width: 100% !important;
        margin-bottom: var(--spacing-sm);
    }

    main [style*="display: flex"][style*="justify-content: space-between"],
    main [style*="display: flex"][style*="justify-content:space-between"],
    main [style*="display:flex"][style*="justify-content: space-between"],
    main [style*="display:flex"][style*="justify-content:space-between"] {
        flex-direction: column !important;
        align-items: stretch !important;
        gap: var(--spacing-sm) !important;
    }

    main [style*="display: flex"][style*="gap:"],
    main [style*="display:flex"][style*="gap:"] {
        flex-wrap: wrap !important;
    }

    table {
        width: 100%;
    }

    [style*="overflow-x: auto"] {
        -webkit-overflow-scrolling: touch;
    }

    div[style*="display: grid"][style*="grid-template-columns: 1fr 1fr"],
    div[style*="display:grid"][style*="grid-template-columns: 1fr 1fr"],
    div[style*="display: grid"][style*="grid-template-columns: 2fr 1fr"],
    div[style*="display:grid"][style*="grid-template-columns: 2fr 1fr"],
    div[style*="display: grid"][style*="grid-template-columns: repeat(2, 1fr)"],
    div[style*="display:grid"][style*="grid-template-columns: repeat(2, 1fr)"] {
        display: block !important;
    }

    div[style*="display: grid"][style*="grid-template-columns: 1fr 1fr"] > *,
    div[style*="display:grid"][style*="grid-template-columns: 1fr 1fr"] > *,
    div[style*="display: grid"][style*="grid-template-columns: 2fr 1fr"] > *,
    div[style*="display:grid"][style*="grid-template-columns: 2fr 1fr"] > *,
    div[style*="display: grid"][style*="grid-template-columns: repeat(2, 1fr)"] > *,
    div[style*="display:grid"][style*="grid-template-columns: repeat(2, 1fr)"] > * {
        margin-bottom: var(--spacing-md);
    }

    main input[type="text"][style*="width:"],
    main input[type="email"][style*="width:"],
    main input[type="number"][style*="width:"],
    main select[style*="width:"] {
        width: 100% !important;
        max-width: 100% !important;
    }

    main [style*="min-width: 200px"],
    main [style*="min-width: 250px"],
    main [style*="min-width: 260px"] {
        min-width: 0 !important;
        width: 100% !important;
    }
}