:root {
    --bg: #0a0d14;
    --bg-card: #111520;
    --bg-elevated: #181d2a;
    --accent: #c9a84c;
    --accent-dim: rgba(201, 168, 76, 0.15);
    --accent-glow: rgba(201, 168, 76, 0.25);
    --steel: #5a7a96;
    --green: #4ade80;
    --text: #e8ecf1;
    --text-dim: #9aa4b2;
    --text-muted: #5d6575;
    --border: rgba(148, 163, 184, 0.08);
    --border-hover: rgba(201, 168, 76, 0.25);
    --radius: 18px;
    --radius-sm: 12px;
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== Base ===== */

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

html { scroll-behavior: smooth; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ===== Navbar ===== */

.navbar {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 1000;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 13, 20, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: 4px;
    color: var(--text);
    text-decoration: none;
}

.nav-logo span { color: var(--accent); }

.nav-links {
    display: flex;
    gap: 1.8rem;
    align-items: center;
}

.nav-links a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.3px;
    transition: color 0.3s;
    text-transform: uppercase;
}

.nav-links a:hover { color: var(--accent); }

.nav-contact-top {
    display: flex;
    gap: 0.8rem;
    align-items: center;
}

.nav-contact-top a {
    padding: 0.45rem 1rem;
    border-radius: 8px;
    font-size: 0.78rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s;
    border: 1px solid var(--border);
    color: var(--text-dim);
}

.nav-contact-top a:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.nav-contact-top a.phone {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--green);
}

.nav-contact-top a.phone:hover { background: rgba(16, 185, 129, 0.15); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.4rem;
    cursor: pointer;
}

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

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 8rem 2rem 4rem;
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 60% at 50% 0%, rgba(201, 168, 76, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 50% at 80% 80%, rgba(90, 122, 150, 0.06) 0%, transparent 50%);
    pointer-events: none;
}

.hero-canvas {
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 100%;
    z-index: 0;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 820px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.45rem 1.2rem;
    background: var(--accent-dim);
    border: 1px solid rgba(201, 168, 76, 0.2);
    border-radius: 100px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 1.8rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    animation: fade-in-down 0.8s ease both;
}

.hero-badge::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: pulse 2.5s infinite;
}

.hero-title {
    font-size: clamp(2rem, 5.5vw, 3.6rem);
    font-weight: 900;
    line-height: 1.08;
    margin-bottom: 1.2rem;
    animation: fade-in-up 0.8s ease 0.1s both;
    letter-spacing: -0.02em;
}

.hero-title .accent { color: var(--accent); }

.hero-sub {
    font-size: clamp(0.95rem, 2.2vw, 1.15rem);
    color: var(--text-dim);
    max-width: 620px;
    margin: 0 auto 2.2rem;
    line-height: 1.75;
    animation: fade-in-up 0.8s ease 0.2s both;
}

.hero-sub strong { color: var(--text); font-weight: 600; }

.hero-cta {
    display: flex;
    gap: 0.9rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fade-in-up 0.8s ease 0.3s both;
}

.hero-facts {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    margin-top: 3rem;
    flex-wrap: wrap;
    animation: fade-in-up 0.8s ease 0.4s both;
}

.hero-fact {
    text-align: center;
    position: relative;
}

.hero-fact:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -1.25rem;
    top: 20%;
    height: 60%;
    width: 1px;
    background: var(--border);
}

.hero-fact .num {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--accent);
    display: block;
    line-height: 1;
}

.hero-fact .label {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 0.3rem;
}

/* ===== Sections ===== */

section { padding: 5rem 2rem; }

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: clamp(1.5rem, 4vw, 2.1rem);
    font-weight: 800;
    margin-bottom: 0.6rem;
    letter-spacing: -0.01em;
}

.section-header p {
    color: var(--text-muted);
    font-size: 0.95rem;
    max-width: 520px;
    margin: 0 auto;
    line-height: 1.6;
}

.section-header .line {
    width: 50px; height: 2px;
    background: linear-gradient(90deg, var(--accent), transparent);
    margin: 1.2rem auto 0;
    border-radius: 2px;
}

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

.btn {
    padding: 1rem 2rem;
    border-radius: var(--radius-sm);
    font-weight: 700;
    font-size: 0.9rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.35s var(--ease-out);
    cursor: pointer;
    border: none;
    font-family: inherit;
    letter-spacing: 0.2px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), #b8943f);
    color: var(--bg);
    box-shadow: 0 4px 30px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 40px var(--accent-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.03);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent);
    color: var(--accent);
}

/* ===== Scenarios ===== */

.scenarios {
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-card) 100%);
}

.scenario-tabs {
    display: flex;
    gap: 0.6rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.scenario-tab {
    padding: 0.65rem 1.4rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 100px;
    color: var(--text-dim);
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    font-family: inherit;
    letter-spacing: 0.3px;
}

.scenario-tab:hover {
    border-color: var(--steel);
    color: var(--text);
}

.scenario-tab.active {
    background: linear-gradient(135deg, var(--accent), #b8943f);
    color: var(--bg);
    border-color: var(--accent);
    box-shadow: 0 4px 20px var(--accent-glow);
}

.scenario-card {
    max-width: 720px;
    margin: 0 auto;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--accent), var(--steel), var(--accent));
    opacity: 0.6;
}

.scenario-card.is-switching {
    opacity: 0;
    transform: translateY(12px);
}

.scenario-card h3 {
    font-size: 1.15rem;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
}

.scenario-card h3 .emoji { font-size: 1.5rem; }

.scenario-list {
    list-style: none;
}

.scenario-list li {
    padding: 0.85rem 0;
    border-bottom: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-dim);
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    line-height: 1.6;
}

.scenario-list li:last-child { border-bottom: none; }

.scenario-list li::before {
    content: '';
    width: 5px; height: 5px;
    background: var(--accent);
    border-radius: 50%;
    margin-top: 0.5rem;
    flex-shrink: 0;
    box-shadow: 0 0 8px var(--accent-glow);
}

.scenario-list li strong {
    color: var(--text);
    font-weight: 600;
}

/* ===== Projects ===== */

.projects-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    gap: 1.2rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.project-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-hover);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.4), 0 0 0 1px var(--border-hover);
}

.tag {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    background: var(--accent-dim);
    color: var(--accent);
    border-radius: 6px;
    font-size: 0.68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 0.8rem;
}

.tag-green  { background: rgba(74, 222, 128, 0.1);    color: var(--green); }
.tag-steel  { background: rgba(90, 122, 150, 0.15);  color: var(--steel); }
.tag-emerald{ background: rgba(16, 185, 129, 0.1);    color: #10b981; }

.project-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.project-card p {
    font-size: 0.87rem;
    color: var(--text-dim);
    line-height: 1.65;
    margin-bottom: 1rem;
}

.project-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.project-stat { font-size: 0.8rem; }

.project-stat .val {
    font-size: 1.15rem;
    font-weight: 800;
    color: var(--accent);
}

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

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--steel);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.3s;
}

.project-link:hover {
    color: var(--accent);
    gap: 0.7rem;
}

/* ===== Roles ===== */

.roles-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.2rem;
}

.role-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.8rem;
    text-align: center;
    transition: all 0.4s var(--ease-out);
    position: relative;
}

.role-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.role-card .emoji {
    font-size: 2rem;
    margin-bottom: 0.7rem;
    display: block;
    opacity: 0.9;
}

.role-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 0.4rem;
}

.role-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
    line-height: 1.55;
}

/* ===== About ===== */

.about {
    background: linear-gradient(180deg, var(--bg-card) 0%, var(--bg) 100%);
}

.about-grid {
    max-width: 900px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 3rem;
    align-items: start;
}

.about-photo {
    aspect-ratio: 1;
    background: linear-gradient(135deg, #1a2438, var(--bg-card));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.5);
}

.about-photo::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(201, 168, 76, 0.1), transparent 60%);
}

.about-photo img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 2;
}

.about-photo img.loaded { opacity: 1; }

.about-photo .fallback {
    position: relative;
    z-index: 1;
    opacity: 0.6;
}

.about-text h3 {
    font-size: 1.25rem;
    margin-bottom: 1.2rem;
    font-weight: 700;
}

.about-text p {
    color: var(--text-dim);
    font-size: 0.9rem;
    line-height: 1.75;
    margin-bottom: 0.9rem;
}

.about-text strong { color: var(--accent); font-weight: 600; }

.about-box {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.2rem 1.5rem;
    margin-top: 1.2rem;
}

.about-box p {
    margin: 0;
    font-size: 0.88rem;
    color: var(--text-dim);
}

.about-box strong { color: var(--text); }

.about-box .highlight { color: var(--accent); }

/* ===== Contact ===== */

.contact-box {
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.contact-box h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.contact-box > p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1.8rem;
}

.contact-btns {
    display: flex;
    gap: 0.9rem;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-btns .btn {
    min-width: 170px;
    justify-content: center;
}

.contact-links {
    margin-top: 1.8rem;
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.contact-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.3s;
    font-weight: 500;
}

.contact-links a:hover { color: var(--accent); }

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

footer {
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    padding: 2.5rem 2rem;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 0.8rem;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.footer-links a {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1.1rem;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.82rem;
    font-weight: 600;
    transition: all 0.35s var(--ease-out);
}

.footer-links a:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.footer-brand {
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: 4px;
    margin-bottom: 0.4rem;
}

.footer-brand span { color: var(--accent); }

.footer-name { color: var(--text-dim); margin-bottom: 0.6rem; font-size: 0.9rem; }
.footer-year { color: var(--text-muted); font-size: 0.8rem; margin-bottom: 1rem; }

.footer-meta {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.82rem;
}

.footer-meta a {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.3s;
    font-weight: 500;
}

.footer-meta a:hover { color: var(--accent); }

/* ===== Mobile menu ===== */

.mobile-menu {
    display: none;
    flex-direction: column;
    gap: 0.5rem;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: rgba(10, 13, 20, 0.98);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

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

.mobile-menu a {
    color: var(--text-dim);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 600;
    padding: 0.6rem 0;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.mobile-menu a:hover { color: var(--accent); }

.mobile-menu .phone { color: var(--green); }

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(1.4); }
}

@keyframes fade-in-up {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes fade-in-down {
    from { opacity: 0; transform: translateY(-20px); }
    to   { opacity: 1; transform: translateY(0); }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

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

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .fade-in { opacity: 1; transform: none; transition: none; }
    .hero-badge, .hero-title, .hero-sub, .hero-cta, .hero-facts { animation: none; }
}

/* ===== Responsive ===== */

@media (max-width: 768px) {
    .navbar { padding: 0.8rem 1rem; }
    .nav-links,
    .nav-contact-top { display: none; }
    .mobile-menu-btn { display: block; }
    .about-grid { grid-template-columns: 1fr; }
    .about-photo { width: 100%; max-width: 340px; margin: 0 auto; }
    .hero-facts { gap: 1.5rem; }
    .hero-fact:not(:last-child)::after { display: none; }
    .scenario-card { padding: 1.8rem; }
    section { padding: 3.5rem 1.2rem; }
    .contact-box { padding: 1.8rem; }
    .project-card { padding: 1.5rem; }
}