/* ============================================
   FIXBLUEPRINT — Main Stylesheet
   ============================================ */

:root {
    --color-primary: #0071e3;
    --color-primary-dark: #0058b0;
    --color-primary-light: #e8f4fd;
    --color-accent: #ff6b35;
    --color-accent-light: #fff0e8;
    --color-success: #34c759;
    --color-success-light: #e8f9ed;
    --color-dark: #1d1d1f;
    --color-text: #424245;
    --color-text-light: #6e6e73;
    --color-bg: #ffffff;
    --color-bg-alt: #f5f5f7;
    --color-bg-dark: #1d1d1f;
    --color-border: #e0e0e5;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-max: 1200px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.1), 0 4px 12px rgba(0,0,0,0.05);
    --shadow-xl: 0 24px 60px rgba(0,0,0,0.12);
    --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* RESET & BASE */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text);
    background: var(--color-bg);
    overflow-x: hidden;
}

img, svg {
    display: block;
    max-width: 100%;
}

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

h1, h2, h3, h4, h5, h6 {
    color: var(--color-dark);
    line-height: 1.2;
    font-weight: 700;
}

/* CONTAINER */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* BUTTONS */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: 50px;
    font-family: var(--font-family);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    border: 2px solid transparent;
    gap: 8px;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

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

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

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

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

.btn-white:hover {
    background: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: all var(--transition);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    gap: 16px;
}

/* Region & language (top right, next to menu) */
.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-shrink: 0;
}

.locale-picker {
    display: flex;
    align-items: flex-end;
    gap: 10px;
}

.locale-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.locale-label {
    font-size: 0.625rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted, #6e6e73);
    white-space: nowrap;
}

.locale-select {
    font-family: inherit;
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 6px 26px 6px 8px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    background: #fff;
    color: var(--color-text);
    cursor: pointer;
    min-width: 108px;
    max-width: 132px;
    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='%236e6e73' d='M3 4.5L6 7.5L9 4.5'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}

.locale-select:hover {
    border-color: var(--color-primary);
}

.locale-select:focus {
    outline: 2px solid var(--color-primary);
    outline-offset: 1px;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-dark);
}

.logo-icon {
    color: var(--color-primary);
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 36px;
    flex: 1;
    min-width: 0;
}

.main-nav a {
    font-size: 0.925rem;
    font-weight: 500;
    color: var(--color-text);
    position: relative;
}

.main-nav a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition);
}

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

.main-nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-dark);
    border-radius: 2px;
    transition: all var(--transition);
}

/* ============================================
   HERO
   ============================================ */
.hero {
    padding: 160px 0 100px;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-primary-light) 50%, var(--color-bg-alt) 100%);
    overflow: hidden;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero h1 {
    font-size: clamp(2.2rem, 4.5vw, 3.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 36px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-illustration {
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-illustration img {
    width: 110%;
    max-width: none;
    height: auto;
    display: block;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-16px); }
}

/* ============================================
   CATEGORIES
   ============================================ */
.categories {
    padding: 100px 0;
    background: var(--color-bg);
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    text-align: center;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.section-subtitle {
    text-align: center;
    color: var(--color-text-light);
    font-size: 1.1rem;
    margin-bottom: 56px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.category-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    text-align: center;
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.category-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.category-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary-light);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    transition: all var(--transition);
}

.category-card:hover .category-icon {
    background: var(--color-primary);
    color: #fff;
}

.category-icon svg {
    width: 40px;
    height: 40px;
}

.category-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
}

.category-link {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: all var(--transition);
}

.category-card:hover .category-link {
    letter-spacing: 0.5px;
}

/* ============================================
   EXPLAINER
   ============================================ */
.explainer {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.explainer-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.explainer-text h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.explainer-text p {
    margin-bottom: 16px;
    font-size: 1.05rem;
    line-height: 1.8;
}

.explainer-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.mini-card {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    text-align: center;
    font-weight: 600;
    font-size: 0.95rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

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

/* ============================================
   STATS
   ============================================ */
.stats {
    padding: 100px 0;
    background: var(--color-bg);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
}

.stat-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 44px 36px;
    transition: all var(--transition);
    border: 1px solid transparent;
}

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

.stat-number {
    font-size: clamp(2.5rem, 4vw, 3.5rem);
    font-weight: 900;
    color: var(--color-primary);
    line-height: 1;
    margin-bottom: 12px;
    letter-spacing: -0.03em;
}

.stat-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.stat-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   SUSTAINABILITY
   ============================================ */
.sustainability {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.sustainability-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.sustainability-text h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.sustainability-text p {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.sustainability-text .btn {
    margin-top: 12px;
}

.timeline {
    position: relative;
    padding-left: 40px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-success));
    border-radius: 3px;
}

.timeline-item {
    position: relative;
    margin-bottom: 36px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-dot {
    position: absolute;
    left: -34px;
    top: 4px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 3px solid var(--color-bg-alt);
    box-shadow: 0 0 0 3px var(--color-primary);
}

.timeline-item:nth-child(2) .timeline-dot { background: #5b9cf6; box-shadow: 0 0 0 3px #5b9cf6; }
.timeline-item:nth-child(3) .timeline-dot { background: #6bc78f; box-shadow: 0 0 0 3px #6bc78f; }
.timeline-item:nth-child(4) .timeline-dot { background: var(--color-success); box-shadow: 0 0 0 3px var(--color-success); }

.timeline-content strong {
    display: block;
    font-size: 1.1rem;
    color: var(--color-dark);
    margin-bottom: 4px;
}

.timeline-content p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin: 0;
}

/* ============================================
   LOYALTY
   ============================================ */
.loyalty {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-success-light) 100%);
}

.loyalty-inner {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.loyalty-inner h2 {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 24px;
    letter-spacing: -0.02em;
}

.loyalty-inner p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 16px;
}

/* ============================================
   OBSTACLES
   ============================================ */
.obstacles {
    padding: 100px 0;
    background: var(--color-bg);
}

.obstacles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.obstacle-card {
    background: var(--color-bg-alt);
    border-radius: var(--radius-lg);
    padding: 44px 32px;
    text-align: center;
    transition: all var(--transition);
    border: 1px solid transparent;
}

.obstacle-card:hover {
    border-color: var(--color-accent);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.obstacle-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    background: var(--color-accent-light);
    border-radius: 50%;
    color: var(--color-accent);
    transition: all var(--transition);
}

.obstacle-card:hover .obstacle-icon {
    background: var(--color-accent);
    color: #fff;
}

.obstacle-icon svg {
    width: 40px;
    height: 40px;
}

.obstacle-card h3 {
    font-size: 1.15rem;
    margin-bottom: 14px;
    line-height: 1.4;
}

.obstacle-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   CTA
   ============================================ */
.cta {
    padding: 100px 0;
    background: var(--color-bg-alt);
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.cta-card {
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    padding: 44px 32px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: all var(--transition);
}

.cta-card:hover {
    border-color: var(--color-success);
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.cta-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    background: var(--color-success-light);
    border-radius: 50%;
    color: var(--color-success);
    transition: all var(--transition);
}

.cta-card:hover .cta-icon {
    background: var(--color-success);
    color: #fff;
}

.cta-icon svg {
    width: 36px;
    height: 36px;
}

.cta-card h3 {
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.cta-card p {
    color: var(--color-text-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   MANUFACTURER BANNER
   ============================================ */
.manufacturer-banner {
    padding: 80px 0;
    background: var(--color-bg);
}

.banner-inner {
    background: linear-gradient(135deg, var(--color-primary) 0%, #0058b0 50%, #003d7a 100%);
    border-radius: var(--radius-xl);
    padding: 64px 56px;
    text-align: center;
    color: #fff;
}

.banner-inner h2 {
    color: #fff;
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    margin-bottom: 16px;
}

.banner-inner p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background: var(--color-bg-dark);
    color: rgba(255,255,255,0.7);
    padding-top: 64px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: 60px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}

.footer-brand .logo-icon {
    color: var(--color-primary);
}

.footer-brand p {
    font-size: 0.95rem;
    line-height: 1.7;
    max-width: 300px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.footer-col h4 {
    color: #fff;
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

.footer-col a {
    display: block;
    font-size: 0.925rem;
    padding: 6px 0;
    color: rgba(255,255,255,0.6);
    transition: color var(--transition);
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    padding: 24px 0;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.4);
}

/* ============================================
   ANIMATIONS (Scroll-triggered via JS)
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
    opacity: 1;
    transform: translateX(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .hero-inner {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-illustration {
        max-width: 400px;
    }

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

    .explainer-inner,
    .sustainability-inner {
        grid-template-columns: 1fr;
        gap: 48px;
    }

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

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

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: rgba(255,255,255,0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 32px 24px;
        gap: 24px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg);
    }

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

    .mobile-menu-btn {
        display: flex;
    }

    .locale-picker {
        gap: 6px;
    }

    .locale-select {
        min-width: 88px;
        max-width: 104px;
        font-size: 0.75rem;
        padding: 5px 22px 5px 6px;
    }

    .locale-label {
        font-size: 0.55rem;
    }

    .mobile-menu-btn.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .mobile-menu-btn.active span:nth-child(2) {
        opacity: 0;
    }

    .mobile-menu-btn.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 130px 0 70px;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .category-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .category-card {
        padding: 28px 20px;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .obstacles-grid,
    .cta-grid {
        grid-template-columns: 1fr;
    }

    .banner-inner {
        padding: 44px 28px;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
    }

    .btn {
        padding: 12px 24px;
        font-size: 0.95rem;
    }
}

@media (max-width: 480px) {
    .category-grid {
        grid-template-columns: 1fr;
    }

    .explainer-cards {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .hero-actions .btn {
        width: 100%;
        max-width: 300px;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}