/* ===================================
   Reducio Website Styles
   ================================== */

/* CSS Variables */
:root {
    /* Colors - Light Mode */
    --color-bg: #ffffff;
    --color-bg-secondary: #f5f5f7;
    --color-bg-tertiary: #e8e8ed;
    --color-text: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-border: #d2d2d7;
    --color-border-light: #e8e8ed;

    /* Brand Colors */
    --color-primary: #FF6633;
    --color-primary-hover: #FF8C66;
    --color-primary-dark: #CC5229;
    --color-accent: #FF6633;
    --color-success: #32d74b;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #FF6633 0%, #FF8C66 100%);
    --gradient-accent: linear-gradient(135deg, #FF6633 0%, #CC5229 100%);

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.15);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --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: 3.5rem;

    /* 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: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

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

    /* Z-index */
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-modal: 400;
}

/* Dark Mode */
[data-theme="dark"] {
    --color-bg: #000000;
    --color-bg-secondary: #1c1c1e;
    --color-bg-tertiary: #2c2c2e;
    --color-text: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #6e6e73;
    --color-border: #3d3d3f;
    --color-border-light: #2c2c2e;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.6);
}

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

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    transition: background-color var(--transition-base), color var(--transition-base);
}

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

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

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

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

ul, ol {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-primary-hover);
    color: white;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

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

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

/* ===================================
   Navigation
   ================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border-light);
    transition: background-color var(--transition-base);
}

[data-theme="dark"] .navbar {
    background: rgba(0, 0, 0, 0.8);
}

.nav-container {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-4) var(--space-6);
}

.nav-container--simple {
    grid-template-columns: 1fr auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text);
    font-weight: 600;
    font-size: var(--font-size-xl);
}

.logo-image {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
}

.nav-menu {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-8);
}

.nav-link {
    color: var(--color-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--space-4);
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    color: var(--color-text-secondary);
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--color-bg-tertiary);
    color: var(--color-text);
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

.nav-download {
    padding: var(--space-2) var(--space-5);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    padding: 4px 0;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-container {
        display: flex;
        justify-content: space-between;
    }

    .nav-actions {
        gap: var(--space-2);
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        padding: var(--space-4);
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border-light);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu .nav-link {
        display: block;
        padding: var(--space-4);
        font-size: var(--font-size-base);
    }

    .nav-download {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }
}

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

.hero {
    position: relative;
    min-height: auto;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: var(--space-12);
    overflow: hidden;
}

.hero-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-12);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-12) var(--space-6);
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--space-6);
}

.hero-title .accent {
    background: var(--gradient-accent);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-6);
    max-width: 550px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-1);
}

.hero-requirement {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.hero-languages {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-2);
}

.hero-image {
    position: relative;
    z-index: 1;
}

.hero-screenshot-wrapper {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: var(--color-bg-secondary);
    width: 100%;
    max-width: 900px;
}

.hero-carousel {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.hero-screenshot {
    width: 100%;
    height: auto;
    display: block;
    flex-shrink: 0;
}

.hero-dots {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-top: var(--space-4);
}

.hero-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-border);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.hero-dot.active {
    background: var(--color-primary);
    width: 24px;
    border-radius: 4px;
}

.hero-bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(120, 119, 198, 0.15), transparent);
    pointer-events: none;
}

[data-theme="dark"] .hero-bg-gradient {
    background: radial-gradient(ellipse 80% 50% at 50% -20%, rgba(120, 119, 198, 0.25), transparent);
}

@media (max-width: 968px) {
    .hero-title {
        font-size: clamp(2rem, 8vw, 3rem);
    }
}

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

.features {
    padding: var(--space-24) 0;
    background: var(--color-bg-secondary);
}

.features-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text);
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.tab-btn:hover {
    background: var(--color-border);
    color: var(--color-text);
}

.tab-btn.active {
    background: var(--color-text);
    color: var(--color-bg);
}

.tab-btn svg {
    width: 20px;
    height: 20px;
}

.tab-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 24px;
    height: 24px;
    padding: 0 var(--space-2);
    font-size: var(--font-size-xs);
    font-weight: 600;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
}

.tab-btn.active .tab-count {
    background: rgba(255, 255, 255, 0.2);
    color: inherit;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-6);
}

.feature-card {
    padding: var(--space-6);
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    color: var(--color-primary);
}

.feature-card h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
}

.feature-card p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* ===================================
   Why Section
   ================================== */

.why-section {
    padding: var(--space-24) 0;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--space-8);
}

.why-card {
    padding: var(--space-8);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

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

.why-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-6);
    background: var(--gradient-accent);
    border-radius: var(--radius-lg);
    color: white;
}

.why-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--space-3);
}

.why-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================================
   Pricing Section
   ================================== */

.pricing {
    padding: var(--space-24) 0;
    background: var(--color-bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    max-width: 1000px;
    margin: 0 auto;
    align-items: start;
}

@media (max-width: 900px) {
    .pricing-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
}

.pricing-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: all var(--transition-base);
}

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

.pricing-card.featured {
    border: 2px solid var(--color-primary);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-2) var(--space-4);
    background: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    margin-bottom: var(--space-6);
}

.pricing-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-4);
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: var(--space-1);
    margin-bottom: var(--space-2);
}

.pricing-price .currency {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text);
}

.pricing-price .amount {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.pricing-price .period {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.pricing-savings {
    font-size: var(--font-size-sm);
    color: var(--color-success);
    font-weight: 500;
}

.pricing-features {
    margin-bottom: var(--space-8);
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.pricing-features li svg {
    flex-shrink: 0;
    color: var(--color-success);
}

.pricing-card .btn {
    width: 100%;
}

/* ===================================
   FAQ Section
   ================================== */

.faq {
    padding: var(--space-24) 0;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--color-border-light);
}

.faq-question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-6) 0;
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text);
    text-align: left;
    transition: color var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary);
}

.faq-question svg {
    flex-shrink: 0;
    color: var(--color-text-tertiary);
    transition: transform var(--transition-fast);
}

.faq-item.active .faq-question svg {
    transform: rotate(180deg);
}

.faq-answer {
    display: none;
    padding-bottom: var(--space-6);
}

.faq-item.active .faq-answer {
    display: block;
    animation: fadeIn 0.3s ease;
}

.faq-answer p {
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ===================================
   Download Section
   ================================== */

.download {
    padding: var(--space-24) 0;
    background: var(--color-bg-secondary);
    text-align: center;
}

.download-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-4);
}

.download-content p {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-8);
}

.download-note {
    margin-top: var(--space-1);
    font-size: var(--font-size-m) !important;
    color: var(--color-text-tertiary) !important;
}

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

.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-bg);
    border-top: 1px solid var(--color-border-light);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-brand p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--space-12);
}

.footer-column h4 {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-tertiary);
    margin-bottom: var(--space-2);
}

.footer-column ul {
    display: flex;
    flex-direction: row;
    gap: var(--space-4);
}

.footer-column a {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.footer-column a:hover {
    color: var(--color-text);
}

.footer-bottom {
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-light);
    text-align: center;
}

.footer-bottom p {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.footer-languages {
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
}

@media (max-width: 768px) {
    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-4);
        align-items: center;
    }

    .footer-column ul {
        justify-content: center;
    }
}

/* ===================================
   Utility Classes
   ================================== */

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

/* ===================================
   Animations
   ================================== */

@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;
    }
}

/* ===================================
   Image Modal
   ================================== */

.image-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    cursor: pointer;
    animation: fadeIn 0.2s ease;
}

.image-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    max-width: 90%;
    max-height: 90%;
    border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    cursor: default;
    animation: zoomIn 0.3s ease;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff;
    font-size: 40px;
    font-weight: 300;
    cursor: pointer;
    transition: color 0.2s ease;
    z-index: 10000;
}

.modal-close:hover {
    color: var(--color-primary);
}

.hero-screenshot {
    cursor: pointer;
    transition: transform 0.2s ease;
}

.hero-screenshot:hover {
    transform: scale(1.02);
}

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

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