@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");

/* ========================================
   DESIGN TOKENS
======================================== */
:root {
    --color-bg: #050505;
    --color-bg-secondary: #0d0d0d;
    --color-bg-tertiary: #141414;
    --color-surface: #1a1a1a;
    --color-surface-hover: #222222;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-light: rgba(255, 255, 255, 0.12);

    --color-text: #f5f5f7;
    --color-text-secondary: #a1a1a6;
    --color-text-tertiary: #6e6e73;

    --color-accent: #0066ff;
    --color-accent-hover: #5e9eff;
    --gradient-accent: linear-gradient(
        135deg,
        #0066ff 0%,
        #3385ff 50%,
        #004ecc 100%
    );
    --gradient-accent-subtle: linear-gradient(
        135deg,
        rgba(0, 102, 255, 0.15) 0%,
        rgba(51, 133, 255, 0.15) 100%
    );
    --gradient-glow: radial-gradient(
        ellipse at 50% 0%,
        rgba(0, 102, 255, 0.12) 0%,
        transparent 60%
    );

    --font-family:
        "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", 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;
    --font-size-6xl: 4.5rem;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.4s ease;
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(0, 102, 255, 0.15);

    --header-height: 64px;
    --container-max: 1200px;
    --container-wide: 1400px;
}

/* ========================================
   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: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

ul,
ol {
    list-style: none;
}

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

input,
textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    background: none;
    border: none;
    outline: none;
}

::selection {
    background: rgba(0, 102, 255, 0.3);
    color: var(--color-text);
}

/* ========================================
   UTILITIES
======================================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

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

.section {
    padding: var(--spacing-5xl) 0;
}

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

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

/* ========================================
   HEADER
======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    background: rgba(5, 5, 5, 0.72);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition-base);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.header__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header__logo-icon {
    width: 32px;
    height: 32px;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.header__nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.header__nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--gradient-accent);
    transition: width var(--transition-base);
    border-radius: 1px;
}

.header__nav-link:hover,
.header__nav-link.active {
    color: var(--color-text);
}

.header__nav-link:hover::after,
.header__nav-link.active::after {
    width: 100%;
}

.header__mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    padding: 2px 0;
}

.header__mobile-toggle span {
    display: block;
    width: 100%;
    height: 1.5px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition-base);
    transform-origin: center;
}

.header__mobile-toggle.active span:nth-child(1) {
    transform: translateY(6.5px) rotate(45deg);
}

.header__mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.header__mobile-toggle.active span:nth-child(3) {
    transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 5, 5, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 999;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.mobile-nav.active {
    display: flex;
    opacity: 1;
}

.mobile-nav__link {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.mobile-nav__link:hover {
    color: var(--color-text);
}

/* ========================================
   HERO
======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: calc(var(--header-height) + var(--spacing-4xl)) var(--spacing-xl)
        var(--spacing-4xl);
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 800px;
    height: 800px;
    background: var(--gradient-glow);
    pointer-events: none;
    opacity: 0.6;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-lg);
    background: var(--gradient-accent-subtle);
    border: 1px solid rgba(0, 102, 255, 0.2);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-accent-hover);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 0.8s ease forwards;
}

.hero__badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    animation: pulse 2s infinite;
}

.hero__title {
    font-size: clamp(var(--font-size-4xl), 8vw, var(--font-size-6xl));
    font-weight: 800;
    line-height: 1.05;
    letter-spacing: -0.04em;
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero__subtitle {
    font-size: clamp(var(--font-size-lg), 2.5vw, var(--font-size-xl));
    font-weight: 400;
    color: var(--color-text-secondary);
    line-height: 1.7;
    max-width: 620px;
    margin: 0 auto var(--spacing-2xl);
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

/* ========================================
   BUTTONS
======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 14px 28px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn--primary {
    background: var(--gradient-accent);
    color: #fff;
    box-shadow: var(--shadow-glow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(0, 102, 255, 0.25);
}

.btn--secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border: 1px solid var(--color-border-light);
}

.btn--secondary:hover {
    background: var(--color-surface-hover);
    border-color: rgba(255, 255, 255, 0.18);
    transform: translateY(-2px);
}

.btn__icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.btn:hover .btn__icon {
    transform: translateX(3px);
}

/* ========================================
   ABOUT / MANIFESTO
======================================== */
.manifesto {
    position: relative;
    padding: var(--spacing-5xl) 0;
}

.manifesto__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.manifesto__label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-lg);
}

.manifesto__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    letter-spacing: -0.03em;
    line-height: 1.2;
    margin-bottom: var(--spacing-xl);
}

.manifesto__text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-base);
}

.manifesto__text p + p {
    margin-top: var(--spacing-lg);
}

.manifesto__highlight {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background: var(--gradient-accent-subtle);
    border: 1px solid rgba(0, 102, 255, 0.15);
    border-radius: var(--radius-lg);
    font-weight: 500;
    color: var(--color-text);
    line-height: 1.7;
}

/* ========================================
   THEMES SECTION
======================================== */
.themes {
    padding: var(--spacing-5xl) 0;
    position: relative;
}

.themes__header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.themes__label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.themes__title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    letter-spacing: -0.03em;
}

.themes__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

.theme-card {
    position: relative;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    transition: all var(--transition-slow);
    cursor: pointer;
}

.theme-card:hover {
    border-color: rgba(0, 102, 255, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.theme-card__image {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-tertiary);
}

.theme-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top;
    transition: transform var(--transition-slow);
}

.theme-card:hover .theme-card__image img {
    transform: scale(1.03);
}

.theme-card__body {
    padding: var(--spacing-xl) var(--spacing-2xl) var(--spacing-2xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.theme-card__info {
    flex: 1;
}

.theme-card__name {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-xs);
}

.theme-card__desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.theme-card__arrow {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--gradient-accent-subtle);
    border: 1px solid rgba(0, 102, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    flex-shrink: 0;
}

.theme-card:hover .theme-card__arrow {
    background: var(--gradient-accent);
    border-color: transparent;
}

.theme-card__arrow svg {
    width: 18px;
    height: 18px;
    color: var(--color-text);
    transition: transform var(--transition-fast);
}

.theme-card:hover .theme-card__arrow svg {
    transform: translateX(2px);
}

/* ========================================
   FOOTER
======================================== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-4xl) 0 var(--spacing-2xl);
    background: var(--color-bg-secondary);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-3xl);
}

.footer__brand-desc {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    margin-top: var(--spacing-md);
    max-width: 280px;
}

.footer__heading {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.footer__links {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer__link:hover {
    color: var(--color-text);
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

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

.footer__social {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.footer__social-link:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-border-light);
}

.footer__social-link svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-secondary);
}

/* ========================================
   PAGE HEADER (for inner pages)
======================================== */
.page-header {
    padding: calc(var(--header-height) + var(--spacing-5xl)) 0
        var(--spacing-4xl);
    text-align: center;
    position: relative;
}

.page-header::before {
    content: "";
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 400px;
    background: var(--gradient-glow);
    pointer-events: none;
    opacity: 0.4;
}

.page-header__label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.page-header__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-4xl));
    font-weight: 800;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.page-header__desc {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    max-width: 560px;
    margin: 0 auto;
    position: relative;
}

/* ========================================
   ABOUT PAGE
======================================== */
.about-values {
    padding: var(--spacing-5xl) 0;
}

.about-values__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.value-card {
    padding: var(--spacing-2xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.value-card:hover {
    border-color: rgba(0, 102, 255, 0.2);
    transform: translateY(-2px);
}

.value-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-accent-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.value-card__icon svg {
    width: 24px;
    height: 24px;
    color: var(--color-accent);
}

.value-card__title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

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

/* About story */
.about-story {
    padding: var(--spacing-5xl) 0;
}

.about-story__content {
    max-width: 680px;
    margin: 0 auto;
}

.about-story__text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.about-story__text p + p {
    margin-top: var(--spacing-lg);
}

/* ========================================
   CONTACT PAGE
======================================== */
.contact-section {
    padding: var(--spacing-4xl) 0 var(--spacing-5xl);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
}

.contact-grid--single {
    grid-template-columns: 1fr;
    max-width: 560px;
}

.contact-info__cta {
    margin-top: var(--spacing-2xl);
}

.contact-center {
    max-width: 540px;
    margin: 0 auto;
}

.contact-center__cta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-top: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.contact-center__note {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    line-height: 1.6;
}

.contact-info__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.contact-info__item {
    display: flex;
    gap: var(--spacing-lg);
}

.contact-info__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--gradient-accent-subtle);
    border: 1px solid rgba(0, 102, 255, 0.15);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-info__icon svg {
    width: 20px;
    height: 20px;
    color: var(--color-accent);
}

.contact-info__label {
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-tertiary);
    margin-bottom: var(--spacing-xs);
}

.contact-info__value {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

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

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

.form-group__input,
.form-group__textarea {
    padding: 14px 18px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-group__input:focus,
.form-group__textarea:focus {
    border-color: var(--color-accent);
}

.form-group__input::placeholder,
.form-group__textarea::placeholder {
    color: var(--color-text-tertiary);
}

.form-group__textarea {
    min-height: 140px;
    resize: vertical;
}

/* ========================================
   ANIMATIONS
======================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%,
    100% {
        opacity: 1;
    }
    50% {
        opacity: 0.4;
    }
}

@keyframes float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(32px);
    transition:
        opacity 0.7s ease,
        transform 0.7s ease;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   RESPONSIVE
======================================== */
@media (max-width: 1024px) {
    .manifesto__grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-2xl);
    }

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

@media (max-width: 768px) {
    :root {
        --header-height: 56px;
    }

    .header__nav {
        display: none;
    }

    .header__mobile-toggle {
        display: flex;
    }

    .hero {
        min-height: 85vh;
        padding-top: calc(var(--header-height) + var(--spacing-3xl));
    }

    .hero__actions {
        flex-direction: column;
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

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

    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .about-values__grid {
        grid-template-columns: 1fr;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }

    .page-header {
        padding-top: calc(var(--header-height) + var(--spacing-3xl));
        padding-bottom: var(--spacing-2xl);
    }
}