/* ==========================================================================
   SUA 2026 - Corporate Website Design System
   Swiss Design Aesthetic | Authoritative & Visionary
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-primary: #1A2B3C;
    --color-primary-dark: #0F172A;
    --color-primary-light: #2D4A5E;
    --color-secondary: #E5E4E2;
    --color-secondary-dark: #C8C6C4;
    --color-accent-green: #22C55E;
    --color-accent-blue: #3B82F6;
    --color-accent-gradient: linear-gradient(135deg, #22C55E 0%, #3B82F6 100%);
    --color-text-light: #F8FAFC;
    --color-text-muted: #94A3B8;
    --color-text-dark: #1E293B;
    --color-white: #FFFFFF;
    --color-black: #000000;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;

    /* 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;
    --space-32: 8rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;
    --header-height: 80px;

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.3);

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

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;
}

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

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

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-text-light);
    background-color: var(--color-primary-dark);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul,
ol {
    list-style: none;
}

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

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    letter-spacing: 0.02em;
}

h1 {
    font-size: var(--text-5xl);
}

h2 {
    font-size: var(--text-4xl);
}

h3 {
    font-size: var(--text-3xl);
}

h4 {
    font-size: var(--text-2xl);
}

h5 {
    font-size: var(--text-xl);
}

h6 {
    font-size: var(--text-lg);
}

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

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

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

/* --------------------------------------------------------------------------
   Layout Components
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.container--narrow {
    max-width: var(--container-narrow);
}

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

.section--dark {
    background-color: var(--color-primary-dark);
}

.section--navy {
    background-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    z-index: 1000;
    transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.header--scrolled {
    background-color: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-lg);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding-top: var(--space-4);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header__logo-text {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
    color: var(--color-white);
}

.header__logo-img {
    height: 40px;
    width: auto;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.header__nav-link {
    font-size: var(--text-sm);
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    transition: color var(--transition-base);
}

.header__nav-link:hover {
    color: var(--color-white);
}

.header__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-sm);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.05em;
    color: var(--color-primary-dark);
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.header__cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(180deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    opacity: 0.4;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(15, 23, 42, 0.7) 0%, rgba(26, 43, 60, 0.9) 100%);
}

.hero__content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: var(--space-8);
}

.hero__badge {
    display: inline-block;
    padding: var(--space-2) var(--space-4);
    margin-bottom: var(--space-6);
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-accent-green);
    border: 1px solid var(--color-accent-green);
    border-radius: var(--radius-full);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.2s;
}

.hero__title {
    font-size: clamp(var(--text-4xl), 6vw, var(--text-7xl));
    font-weight: var(--font-weight-bold);
    line-height: 1.1;
    margin-bottom: var(--space-6);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.4s;
}

.hero__subtitle {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto var(--space-10);
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.6s;
}

.hero__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-5) var(--space-10);
    font-size: var(--text-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-primary-dark);
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards;
    animation-delay: 0.8s;
}

.hero__cta:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

.hero__cta-arrow {
    transition: transform var(--transition-base);
}

.hero__cta:hover .hero__cta-arrow {
    transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   About Section (Biz Kimiz)
   -------------------------------------------------------------------------- */
.about {
    background-color: var(--color-primary);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: center;
}

.about__content {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about__content.visible {
    opacity: 1;
    transform: translateX(0);
}

.about__eyebrow {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent-green);
    margin-bottom: var(--space-4);
}

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

.about__text {
    color: var(--color-text-muted);
    margin-bottom: var(--space-6);
    line-height: 1.8;
}

.about__highlight {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-6);
    background: rgba(34, 197, 94, 0.1);
    border-left: 3px solid var(--color-accent-green);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.about__highlight-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-accent-green);
}

.about__highlight-text {
    font-size: var(--text-sm);
    color: var(--color-secondary);
    line-height: 1.7;
}

.about__visual {
    position: relative;
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about__visual.visible {
    opacity: 1;
    transform: translateX(0);
}

.about__image {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
}

.about__stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.stat {
    text-align: center;
    padding: var(--space-6);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat__number {
    font-size: var(--text-4xl);
    font-weight: var(--font-weight-bold);
    background: var(--color-accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat__label {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

/* --------------------------------------------------------------------------
   Ecosystem Section
   -------------------------------------------------------------------------- */
.ecosystem {
    background: linear-gradient(180deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
}

.ecosystem__header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-16);
}

.ecosystem__eyebrow {
    display: inline-block;
    font-size: var(--text-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent-blue);
    margin-bottom: var(--space-4);
}

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

.ecosystem__description {
    color: var(--color-text-muted);
    line-height: 1.8;
}

.ecosystem__cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
}

.eco-card {
    padding: var(--space-8);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
    opacity: 0;
    transform: translateY(30px);
}

.eco-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.eco-card:hover {
    transform: translateY(-5px);
    border-color: rgba(34, 197, 94, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
}

.eco-card__icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-gradient);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
}

.eco-card__icon svg {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

.eco-card__title {
    font-size: var(--text-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--space-3);
}

.eco-card__text {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* --------------------------------------------------------------------------
   DenetGöz Redirect Panel
   -------------------------------------------------------------------------- */
.redirect-panel {
    position: relative;
    padding: var(--space-24) 0;
    background: var(--color-primary-dark);
    overflow: hidden;
}

.redirect-panel__bg {
    position: absolute;
    inset: 0;
    opacity: 0.3;
    background-size: cover;
    background-position: center;
}

.redirect-panel__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(15, 23, 42, 0.95) 0%, rgba(15, 23, 42, 0.7) 100%);
}

.redirect-panel__content {
    position: relative;
    z-index: 10;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-12);
    align-items: center;
}

.redirect-panel__text h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-4);
}

.redirect-panel__text p {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    max-width: 600px;
}

.redirect-panel__cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-6) var(--space-12);
    font-size: var(--text-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-dark);
    background: var(--color-accent-gradient);
    border-radius: var(--radius-full);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    white-space: nowrap;
}

.redirect-panel__cta:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.redirect-panel__cta svg {
    width: 24px;
    height: 24px;
    transition: transform var(--transition-base);
}

.redirect-panel__cta:hover svg {
    transform: translateX(5px);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact {
    background-color: var(--color-primary);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
}

.contact__info h2 {
    margin-bottom: var(--space-6);
}

.contact__text {
    color: var(--color-text-muted);
    margin-bottom: var(--space-8);
    line-height: 1.8;
}

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

.contact__item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.contact__item-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 197, 94, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-accent-green);
}

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

.contact__item-text a:hover {
    color: var(--color-accent-green);
}

.contact__map {
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.contact__map-placeholder {
    text-align: center;
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    padding: var(--space-8) 0;
    background-color: var(--color-primary-dark);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.footer__logo-text {
    font-weight: var(--font-weight-bold);
    letter-spacing: 0.1em;
}

.footer__logo-img {
    height: 30px;
    width: auto;
}

.footer__legal {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.footer__legal strong {
    color: var(--color-accent-green);
    font-weight: var(--font-weight-semibold);
}

.footer__copyright {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

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

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
    .about__grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }

    .about__visual {
        order: -1;
    }

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

    .redirect-panel__content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .redirect-panel__text p {
        margin: 0 auto var(--space-8);
    }

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

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .header__nav {
        display: none;
    }

    h1 {
        font-size: var(--text-4xl);
    }

    h2 {
        font-size: var(--text-3xl);
    }

    h3 {
        font-size: var(--text-2xl);
    }

    .section {
        padding: var(--space-16) 0;
    }

    .hero__content {
        padding: var(--space-4);
    }

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

    .footer__inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero__cta {
        padding: var(--space-4) var(--space-8);
        font-size: var(--text-sm);
    }

    .redirect-panel__cta {
        padding: var(--space-4) var(--space-8);
        font-size: var(--text-base);
    }
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.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;
}

.no-scroll {
    overflow: hidden;
}