/* ==========================================================================
   tuscia.app Landing Page Styles
   Mobile-First Responsive Design
   ========================================================================== */

/* CSS Custom Properties (Design Tokens)
   ========================================================================== */
:root {
    /* Brand Colors */
    --ocra-etrusca: #C4A35A;
    --verde-olivo: #5B7355;
    --terracotta: #B85C38;
    --blu-bolsena: #2E4A62;
    --crema-tufo: #F5F0E8;
    --text-dark: #2D2D2D;
    --text-light: #FFFFFF;
    
    /* Semantic Colors */
    --color-primary: var(--ocra-etrusca);
    --color-secondary: var(--verde-olivo);
    --color-accent: var(--terracotta);
    --color-brand: var(--blu-bolsena);
    --color-background: var(--crema-tufo);
    --color-text: var(--text-dark);
    --color-text-light: var(--text-light);
    
    /* UI Colors */
    --color-error: #D64545;
    --color-error-bg: #FEF2F2;
    --color-success: #22C55E;
    --color-success-bg: #F0FDF4;
    --color-border: rgba(46, 74, 98, 0.15);
    --color-border-focus: var(--ocra-etrusca);
    
    /* Typography */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Font Sizes (Mobile First) */
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* 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 -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    
    /* Layout */
    --container-max: 1200px;
    --header-height: 70px;
}

/* ==========================================================================
   Reset & Base Styles
   ========================================================================== */

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.skip-link {
    position: absolute;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-3) var(--space-6);
    background: var(--color-brand);
    color: var(--color-text-light);
    border-radius: var(--radius-md);
    z-index: 9999;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-12);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--font-size-3xl);
    font-weight: 600;
    color: var(--color-brand);
    line-height: 1.2;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: rgba(45, 45, 45, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

/* ==========================================================================
   Header
   ========================================================================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(245, 240, 232, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-brand);
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 600;
    letter-spacing: -0.02em;
}

.nav {
    display: none;
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-brand);
    background: rgba(46, 74, 98, 0.08);
}

.header-cta {
    display: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn-primary {
    background: var(--color-brand);
    color: var(--color-text-light);
    border: 2px solid var(--color-brand);
}

.btn-primary:hover {
    background: #243d52;
    border-color: #243d52;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background: var(--color-brand);
    color: var(--color-text-light);
}

.btn-full {
    width: 100%;
}

.btn-large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--font-size-base);
}

.btn-icon {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: calc(var(--header-height) + var(--space-8)) var(--space-4) var(--space-16);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><defs><linearGradient id="g" x1="0%" y1="0%" x2="100%" y2="100%"><stop offset="0%" stop-color="%232E4A62"/><stop offset="50%" stop-color="%235B7355"/><stop offset="100%" stop-color="%23B85C38"/></linearGradient></defs><rect fill="url(%23g)" width="1200" height="800"/><circle cx="200" cy="150" r="80" fill="%23C4A35A" opacity="0.15"/><circle cx="1000" cy="600" r="120" fill="%23C4A35A" opacity="0.1"/><circle cx="600" cy="400" r="200" fill="%23F5F0E8" opacity="0.05"/></svg>');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(46, 74, 98, 0.85) 0%,
        rgba(46, 74, 98, 0.7) 50%,
        rgba(91, 115, 85, 0.75) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--color-text-light);
}

.hero-tagline {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-4);
    padding: var(--space-2) var(--space-4);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    backdrop-filter: blur(4px);
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: 600;
    line-height: 1.1;
    margin-bottom: var(--space-6);
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    line-height: 1.7;
    opacity: 0.9;
    max-width: 500px;
    margin: 0 auto var(--space-8);
}

.hero-actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    align-items: center;
    justify-content: center;
    width: 100%;
}

.hero-scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: rgba(255, 255, 255, 0.7);
    animation: bounce 2s infinite;
}

.scroll-text {
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

/* ==========================================================================
   Features Section
   ========================================================================== */

.features {
    padding: var(--space-16) 0;
    background: var(--color-background);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

.feature-card {
    background: #FFFFFF;
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(196, 163, 90, 0.15) 0%, rgba(196, 163, 90, 0.08) 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-4);
    color: var(--color-primary);
}

.feature-icon svg {
    width: 28px;
    height: 28px;
}

.feature-title {
    font-family: var(--font-display);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-brand);
    margin-bottom: var(--space-3);
}

.feature-description {
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: rgba(45, 45, 45, 0.8);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about {
    padding: var(--space-16) 0;
    background: #FFFFFF;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-12);
}

.about-content {
    max-width: 600px;
}

.about-text {
    font-size: var(--font-size-base);
    line-height: 1.8;
    margin-bottom: var(--space-6);
    color: rgba(45, 45, 45, 0.85);
}

.about-text strong {
    color: var(--color-brand);
    font-weight: 600;
}

.about-cta {
    font-size: var(--font-size-lg);
    font-style: italic;
    color: var(--color-brand);
    border-left: 3px solid var(--color-primary);
    padding-left: var(--space-4);
}

.about-visual {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

.about-card {
    padding: var(--space-8);
    border-radius: var(--radius-lg);
    color: var(--color-text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.about-card-primary {
    background: linear-gradient(135deg, var(--color-brand) 0%, #3d5a73 100%);
}

.about-card-secondary {
    background: linear-gradient(135deg, var(--color-secondary) 0%, #6b8a65 100%);
}

.about-card-accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, #d46b45 100%);
}

.about-stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: var(--font-size-4xl);
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-2);
}

.about-stat-label {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.9;
}

/* ==========================================================================
   Signup Section
   ========================================================================== */

.signup {
    padding: var(--space-16) 0;
    background: linear-gradient(180deg, var(--color-background) 0%, #EDE8DE 100%);
}

.signup-wrapper {
    max-width: 520px;
    margin: 0 auto;
}

.signup-content {
    background: #FFFFFF;
    padding: var(--space-10);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
}

.signup-subtitle {
    font-size: var(--font-size-base);
    color: rgba(45, 45, 45, 0.75);
    margin-bottom: var(--space-8);
}

/* Form Styles */
.signup-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

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

.optional {
    font-weight: 400;
    color: rgba(45, 45, 45, 0.5);
    font-size: var(--font-size-xs);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: var(--space-4);
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background: var(--color-background);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: rgba(45, 45, 45, 0.4);
}

.form-input:hover,
.form-textarea:hover {
    border-color: rgba(46, 74, 98, 0.2);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px rgba(196, 163, 90, 0.15);
}

.form-input.error,
.form-textarea.error {
    border-color: var(--color-error);
}

.form-hint {
    font-size: var(--font-size-xs);
    color: rgba(45, 45, 45, 0.5);
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    min-height: 20px;
}

.form-checkbox-group {
    flex-direction: row;
    align-items: flex-start;
    gap: var(--space-3);
}

.form-checkbox {
    width: 20px;
    height: 20px;
    margin-top: 2px;
    accent-color: var(--color-brand);
    cursor: pointer;
}

.form-checkbox-label {
    font-size: var(--font-size-sm);
    color: rgba(45, 45, 45, 0.85);
    cursor: pointer;
    line-height: 1.5;
}

.form-privacy {
    text-align: center;
    color: rgba(45, 45, 45, 0.5);
}

.form-privacy a {
    color: var(--color-brand);
    text-decoration: underline;
}

.form-privacy a:hover {
    color: var(--color-primary);
}

/* Button States */
.btn .btn-loading {
    display: none;
}

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

.btn.loading .btn-loading {
    display: inline-flex;
}

.spinner {
    width: 20px;
    height: 20px;
    animation: spin 1s linear infinite;
}

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

/* Success State */
.signup-success {
    display: none;
    text-align: center;
    padding: var(--space-8);
}

.signup-success.visible {
    display: block;
    animation: fadeIn var(--transition-slow);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.success-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--space-6);
    color: var(--color-success);
}

.success-icon svg {
    width: 100%;
    height: 100%;
}

.success-title {
    font-family: var(--font-display);
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-brand);
    margin-bottom: var(--space-3);
}

.success-message {
    font-size: var(--font-size-lg);
    color: rgba(45, 45, 45, 0.8);
    margin-bottom: var(--space-6);
}

.signup-form.hidden {
    display: none;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    background: var(--color-brand);
    color: var(--color-text-light);
    padding: var(--space-12) 0 var(--space-8);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-logo {
    color: var(--color-text-light);
    margin-bottom: var(--space-4);
}

.footer-logo .logo-icon {
    width: 40px;
    height: 40px;
}

.footer-tagline {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    max-width: 250px;
}

.footer-heading {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-4);
    opacity: 0.9;
}

.footer-list li {
    margin-bottom: var(--space-2);
}

.footer-list a {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-list a:hover {
    opacity: 1;
}

.social-links {
    display: flex;
    gap: var(--space-4);
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    text-align: center;
}

.copyright {
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

.made-with {
    font-size: var(--font-size-sm);
    opacity: 0.6;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Small tablets (576px+) */
@media (min-width: 576px) {
    :root {
        --font-size-4xl: 3rem;
    }
    
    .hero-actions {
        flex-direction: row;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-visual {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-card:first-child {
        grid-column: span 2;
    }
}

/* Tablets (768px+) */
@media (min-width: 768px) {
    :root {
        --font-size-3xl: 2.25rem;
        --font-size-4xl: 3.5rem;
        --font-size-5xl: 4rem;
    }
    
    .container {
        padding: 0 var(--space-6);
    }
    
    .section-title {
        font-size: var(--font-size-4xl);
    }
    
    .nav {
        display: flex;
        gap: var(--space-1);
    }
    
    .header-cta {
        display: inline-flex;
    }
    
    .hero-title {
        font-size: var(--font-size-5xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-xl);
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    
    .about-text {
        font-size: var(--font-size-lg);
    }
    
    .signup-content {
        padding: var(--space-12);
    }
    
    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

/* Desktops (992px+) */
@media (min-width: 992px) {
    :root {
        --space-16: 5rem;
        --space-20: 6rem;
        --space-24: 8rem;
    }
    
    .hero {
        min-height: 100vh;
        padding: calc(var(--header-height) + var(--space-12)) var(--space-4) var(--space-16);
    }
    
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .about-visual {
        grid-template-columns: 1fr;
        grid-template-rows: repeat(3, 1fr);
    }
    
    .about-card:first-child {
        grid-column: span 1;
    }
}

/* Large desktops (1200px+) */
@media (min-width: 1200px) {
    .container {
        padding: 0 var(--space-8);
    }
    
    .feature-card {
        padding: var(--space-8);
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .header,
    .hero-scroll-indicator,
    .signup-form,
    .signup-success,
    .footer {
        display: none;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
    
    .hero-background {
        display: none;
    }
    
    .hero-content {
        color: var(--color-text);
    }
}