:root {
    --color-bg: #04060d;
    --color-bg-soft: #0b101f;
    --color-surface: rgba(15, 19, 32, 0.9);
    --color-surface-solid: #101526;
    --color-surface-alt: rgba(20, 26, 41, 0.92);
    --color-text: #e7ecfb;
    --color-text-strong: #f4f6ff;
    --color-muted: #98a0bc;
    --color-muted-soft: #7c84a2;
    --color-accent: #7f5af0;
    --color-accent-soft: #9b8cff;
    --color-accent-strong: #5037c7;
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-strong: rgba(127, 90, 240, 0.45);
    --shadow-card: 0 24px 60px rgba(4, 7, 19, 0.55);
    --shadow-nav: 0 18px 40px rgba(2, 4, 12, 0.55);
    --shadow-soft: 0 12px 32px rgba(8, 12, 26, 0.4);
    --radius-lg: 22px;
    --radius-md: 16px;
    --radius-sm: 10px;
    --font-family: 'Plus Jakarta Sans', 'Inter', 'Segoe UI', Tahoma, sans-serif;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--font-family);
    background-color: var(--color-bg);
    background-image:
        radial-gradient(circle at 20% 20%, rgba(127, 90, 240, 0.14) 0%, transparent 55%),
        radial-gradient(circle at 80% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(16, 185, 129, 0.06) 0%, transparent 60%);
    background-attachment: fixed;
    color: var(--color-text);
    line-height: 1.65;
    min-height: 100vh;
    overflow-x: hidden;
}

body::selection,
body *::selection {
    background: rgba(127, 90, 240, 0.35);
    color: var(--color-text-strong);
}

.background-layer {
    position: fixed;
    inset: 0;
    z-index: -2;
    pointer-events: none;
    background:
        linear-gradient(140deg, rgba(12, 18, 34, 0.95), rgba(4, 6, 13, 0.9));
}

.background-layer::after {
    content: "";
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 28px 28px;
    opacity: 0.15;
}

main {
    position: relative;
    z-index: 1;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color 0.2s ease;
}

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

button,
input,
textarea {
    font-family: inherit;
    color: inherit;
}

.container {
    width: min(1200px, 92%);
    margin: 0 auto;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 24px;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 0 24px;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    background: rgba(12, 17, 33, 0.82);
    padding: 0.9rem 1.6rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.08);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-soft);
    transition: var(--transition);
}

.navbar-scrolled .nav-container {
    background: rgba(10, 14, 26, 0.95);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: var(--shadow-nav);
}

.nav-logo-link {
    font-weight: 600;
    font-size: 1.1rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text-strong);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-lang {
    margin-left: auto;
}

.lang-toggle {
    border: 1px solid rgba(127, 90, 240, 0.4);
    background: rgba(127, 90, 240, 0.15);
    color: #fff;
    border-radius: 10px;
    padding: 0.4rem 0.7rem;
    font-weight: 600;
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.lang-toggle:hover {
    border-color: rgba(127, 90, 240, 0.7);
    box-shadow: 0 6px 18px rgba(127, 90, 240, 0.25);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-muted);
    position: relative;
    padding: 0.35rem 0;
}

.nav-link::after {
    content: "";
    position: absolute;
    inset: auto 0 -6px;
    height: 2px;
    background: linear-gradient(90deg, rgba(127, 90, 240, 0), rgba(127, 90, 240, 0.9), rgba(127, 90, 240, 0));
    opacity: 0;
    transform: translateY(4px);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--color-text-strong);
}

.nav-link:hover::after,
.nav-link:focus::after {
    opacity: 1;
    transform: translateY(0);
}

.nav-link-accent {
    padding: 0.55rem 1.2rem;
    border-radius: 999px;
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.24), rgba(127, 90, 240, 0));
    border: 1px solid rgba(127, 90, 240, 0.35);
    color: var(--color-text-strong);
    transition: var(--transition);
}

.nav-link-accent:hover {
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.4), rgba(127, 90, 240, 0.1));
    border-color: rgba(127, 90, 240, 0.6);
    box-shadow: 0 8px 24px rgba(127, 90, 240, 0.25);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    cursor: pointer;
}

.bar {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: 999px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hero */
.hero {
    position: relative;
    padding: clamp(140px, 24vh, 200px) 0 140px;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 12% 10% auto 10%;
    height: 70%;
    background: radial-gradient(circle at 20% 20%, rgba(127, 90, 240, 0.18), transparent 60%);
    filter: blur(60px);
    opacity: 0.9;
    z-index: -1;
}

.hero-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 0.9fr);
    gap: clamp(2rem, 6vw, 4rem);
    align-items: start;
}

.hero-copy {
    max-width: 520px;
}

.hero-title {
    font-size: clamp(3rem, 6.5vw, 4.8rem);
    line-height: 1.05;
    margin: 0 0 1.2rem;
    color: var(--color-text-strong);
    letter-spacing: -0.04em;
}

.hero-lead {
    font-size: 1.08rem;
    color: var(--color-muted);
    margin-bottom: 2rem;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.6rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, #7f5af0, #6242e1);
    color: var(--color-text-strong);
    box-shadow: 0 18px 30px rgba(127, 90, 240, 0.35);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #9170ff, #6a50f2);
    box-shadow: 0 20px 40px rgba(127, 90, 240, 0.45);
}

.btn-ghost {
    background: rgba(127, 90, 240, 0.08);
    color: var(--color-text);
    border-color: rgba(127, 90, 240, 0.4);
}

.btn-ghost:hover {
    background: rgba(127, 90, 240, 0.15);
    border-color: rgba(127, 90, 240, 0.6);
}

.btn-full {
    width: 100%;
}

.hero-panel {
    display: grid;
    gap: 1.5rem;
}

.panel-card {
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
    padding: clamp(1.8rem, 3vw, 2.4rem);
    box-shadow: var(--shadow-card);
    position: relative;
    overflow: hidden;
}

.panel-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(127, 90, 240, 0), rgba(127, 90, 240, 0.2));
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.panel-card:hover::after {
    opacity: 1;
}

.panel-card h3 {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    color: var(--color-text-strong);
}

.panel-card p {
    margin: 0;
    color: var(--color-muted);
}

.panel-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-top: 1.8rem;
    font-weight: 600;
    color: var(--color-accent-soft);
    transition: var(--transition);
}

.panel-link::after {
    content: "→";
    font-size: 0.9rem;
    transition: transform 0.3s ease;
}

.panel-link:hover::after {
    transform: translateX(4px);
}

.panel-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.75rem;
}

.panel-list li {
    position: relative;
    padding-left: 1.4rem;
    color: var(--color-muted);
}

.panel-list li::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 0;
    width: 0.6rem;
    height: 0.6rem;
    background: linear-gradient(135deg, #7f5af0, #4c96ff);
    border-radius: 50%;
    transform: translateY(-50%);
    box-shadow: 0 0 0 4px rgba(127, 90, 240, 0.15);
}

/* Sections */
.section {
    padding: clamp(90px, 12vw, 140px) 0;
    position: relative;
}

.section::before {
    content: "";
    position: absolute;
    inset: 0 0 auto;
    height: 1px;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0));
    top: 0;
    opacity: 0.4;
}

.section-header {
    max-width: 640px;
    margin-bottom: clamp(2.5rem, 8vw, 3.8rem);
}

.section-kicker {
    display: inline-block;
    font-size: 0.75rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.55);
    margin-bottom: 0.9rem;
}

.section h2 {
    margin: 0 0 1rem;
    font-size: clamp(2.2rem, 4vw, 3rem);
    color: var(--color-text-strong);
    letter-spacing: -0.03em;
}

.section-header p {
    margin: 0;
    color: var(--color-muted);
    font-size: 1.05rem;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.75rem;
}

.cards-secondary {
    margin-top: 2rem;
}

.card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.04);
    padding: clamp(1.8rem, 3vw, 2.3rem);
    box-shadow: var(--shadow-soft);
    position: relative;
    overflow: hidden;
    transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.18), rgba(127, 90, 240, 0));
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.card:hover {
    transform: translateY(-8px);
    border-color: rgba(127, 90, 240, 0.45);
    box-shadow: var(--shadow-card);
}

.card:hover::after {
    opacity: 1;
}

.card h3 {
    margin: 0 0 1rem;
    font-size: 1.35rem;
    color: var(--color-text-strong);
}

.card p {
    margin: 0;
    color: var(--color-muted);
    font-size: 0.98rem;
}

.project-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.project-card {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.tech-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.65rem;
}

.tech-list li {
    padding: 0.4rem 0.9rem;
    border-radius: 999px;
    background: rgba(99, 102, 241, 0.14);
    border: 1px solid rgba(127, 90, 240, 0.3);
    color: rgba(231, 236, 251, 0.85);
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 320px) minmax(0, 1fr);
    gap: clamp(2.5rem, 6vw, 4.5rem);
    align-items: start;
}

.contact-info,
.contact-form-container {
    background: var(--color-surface);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: clamp(2.2rem, 3vw, 2.8rem);
    box-shadow: var(--shadow-soft);
}

.contact-info p {
    margin: 0 0 2rem;
    color: var(--color-muted);
}

.contact-item {
    margin-bottom: 2rem;
}

.contact-label {
    display: block;
    font-size: 0.8rem;
    letter-spacing: 0.25em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 0.75rem;
}

.contact-link {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-text-strong);
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
}

.contact-link:hover {
    color: var(--color-accent-soft);
}

.contact-highlights {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 0.85rem;
    color: var(--color-muted);
}

.contact-highlights li {
    position: relative;
    padding-left: 1.4rem;
}

.contact-highlights li::before {
    content: "";
    position: absolute;
    top: 0.65rem;
    left: 0;
    width: 0.55rem;
    height: 0.55rem;
    border-radius: 50%;
    background: linear-gradient(135deg, #7f5af0, #4c96ff);
    box-shadow: 0 0 0 4px rgba(127, 90, 240, 0.15);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.2rem;
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
}

.form-field label {
    font-size: 0.85rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
}

.form-control {
    padding: 0.95rem 1.1rem;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(8, 12, 24, 0.6);
    color: var(--color-text);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    resize: vertical;
}

.form-control:focus {
    outline: none;
    border-color: rgba(127, 90, 240, 0.6);
    box-shadow: 0 0 0 4px rgba(127, 90, 240, 0.1);
    background: rgba(12, 16, 30, 0.9);
}

.form-control.is-invalid {
    border-color: rgba(239, 68, 68, 0.7);
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.15);
}

.form-control::placeholder {
    color: rgba(255, 255, 255, 0.35);
}

.field-error {
    font-size: 0.8rem;
    color: #f87171;
}

/* Notifications */
.notification {
    position: fixed;
    top: 96px;
    right: 24px;
    padding: 1rem 1.6rem;
    border-radius: var(--radius-sm);
    color: var(--color-text-strong);
    font-weight: 500;
    background: rgba(127, 90, 240, 0.92);
    border: 1px solid rgba(127, 90, 240, 0.65);
    box-shadow: 0 18px 40px rgba(127, 90, 240, 0.35);
    z-index: 1200;
    animation: slideIn 0.35s ease both;
    backdrop-filter: blur(12px);
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.notification-error {
    background: rgba(239, 68, 68, 0.9);
    border-color: rgba(239, 68, 68, 0.65);
    box-shadow: 0 18px 40px rgba(239, 68, 68, 0.35);
}

.notification.is-leaving {
    opacity: 0;
    transform: translateX(20px);
}

@keyframes slideIn {
    from {
        transform: translateX(120%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Footer */
.footer {
    padding: 64px 0 48px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(4, 6, 13, 0.6);
}

.footer-content {
    width: min(960px, 92%);
    margin: 0 auto;
    text-align: center;
    color: var(--color-muted);
}

.footer-content p {
    margin: 0.4rem 0;
}

/* Scroll animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(36px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Cookie consent */
.cookie-consent {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: min(420px, calc(100% - 32px));
    background: rgba(10, 10, 16, 0.96);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 18px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.35);
    z-index: 999;
    color: #f4f5ff;
    backdrop-filter: blur(12px);
}

.cookie-consent.hidden {
    display: none;
}

.cookie-consent__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.cookie-consent__text h3 {
    margin: 0 0 0.3rem;
    font-size: 1.15rem;
}

.cookie-consent__text p {
    margin: 0;
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.72);
}

.cookie-consent__actions {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.cookie-btn {
    flex: 1 1 160px;
    border-radius: 999px;
    padding: 0.65rem 1.2rem;
    border: none;
    font-weight: 600;
    cursor: pointer;
}

.cookie-btn.primary {
    background: #7f5af0;
    color: #fff;
    box-shadow: 0 10px 25px rgba(127, 90, 240, 0.35);
}

.cookie-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.18);
}

.cookie-btn.hidden {
    display: none;
}

.cookie-reopen {
    position: fixed;
    left: 24px;
    bottom: 24px;
    border: none;
    border-radius: 999px;
    padding: 0.6rem 1rem;
    background: rgba(10, 10, 16, 0.9);
    color: #fff;
    cursor: pointer;
    font-weight: 600;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
    z-index: 998;
}

.cookie-reopen.hidden {
    display: none;
}

.cookie-consent__note {
    margin: 0;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
}

@media (max-width: 640px) {
    .cookie-consent {
        right: 16px;
        left: 16px;
        width: auto;
    }

    .cookie-consent__actions {
        flex-direction: column;
    }

    .cookie-btn {
        width: 100%;
    }
}