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

:root {
  --accent: #1e6fff;
  --accent-dark: #1450c8;
  --accent-glow: rgba(30, 111, 255, 0.25);
  --bg: #030a1a;
  --bg-card: #071430;
  --bg-section: #040d22;
  --text: #ddeaff;
  --text-muted: #6a87b8;
  --border: rgba(30, 111, 255, 0.18);
  --radius: 14px;
  --transition: 0.3s ease;
  --shadow: 0 8px 40px rgba(0, 20, 80, 0.6);
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* ===== UTILITY ===== */
.accent { color: var(--accent); }
.container { max-width: 1120px; margin: 0 auto; padding: 0 28px; }

.btn {
  display: inline-block;
  padding: 13px 30px;
  background: var(--accent);
  color: #fff;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 2px solid var(--accent);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  letter-spacing: 0.3px;
}
.btn:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 24px var(--accent-glow);
}
.btn--outline { background: transparent; color: var(--accent); }
.btn--outline:hover { background: var(--accent); color: #fff; }
.btn--sm { padding: 8px 20px; font-size: 0.85rem; }

/* ===== NAV ===== */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 20px 52px;
  background: rgba(3, 10, 26, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}
.nav--scrolled { padding: 14px 52px; }
.nav__logo {
  font-size: 1.4rem; font-weight: 900; letter-spacing: 2px;
  text-transform: uppercase; color: var(--text);
}
.nav__links { display: flex; gap: 32px; align-items: center; }
.nav__links a { font-size: 0.88rem; font-weight: 500; color: var(--text-muted); transition: var(--transition); }
.nav__links a:hover { color: var(--accent); }
.nav__product-link {
  background: rgba(30, 111, 255, 0.1);
  border: 1px solid var(--accent);
  padding: 4px 14px;
  border-radius: 20px;
  color: var(--accent) !important;
  font-weight: 600 !important;
  font-size: 0.8rem !important;
  letter-spacing: 0.5px;
}
.nav__product-link:hover {
  background: var(--accent);
  color: #fff !important;
}
.nav__burger { display: none; background: none; border: none; color: var(--text); font-size: 1.5rem; cursor: pointer; }

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding: 130px 52px 90px;
  position: relative; overflow: hidden;
}
.hero__blob {
  position: absolute; right: -150px; top: 50%; transform: translateY(-50%);
  width: 800px; height: 800px; border-radius: 50%;
  background: radial-gradient(circle at center, rgba(30,111,255,0.18) 0%, transparent 68%);
  pointer-events: none;
}
.hero__orb {
  position: absolute; border-radius: 50%; pointer-events: none;
  animation: float 8s ease-in-out infinite;
}
.hero__orb--1 {
  width: 300px; height: 300px;
  right: 15%; top: 20%;
  background: radial-gradient(circle, rgba(30,111,255,0.12) 0%, transparent 70%);
  animation-delay: 0s;
}
.hero__orb--2 {
  width: 180px; height: 180px;
  right: 30%; bottom: 25%;
  background: radial-gradient(circle, rgba(30,111,255,0.08) 0%, transparent 70%);
  animation-delay: -4s;
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-24px); }
}

.hero__content { max-width: 720px; position: relative; z-index: 1; }
.hero__greeting {
  font-size: 1rem; color: var(--accent); font-weight: 600;
  letter-spacing: 3px; text-transform: uppercase; margin-bottom: 14px;
  display: flex; align-items: center; gap: 10px;
}
.hero__greeting::before {
  content: ''; display: inline-block; width: 32px; height: 2px; background: var(--accent);
}
.hero__name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 900; line-height: 1.05; margin-bottom: 16px; letter-spacing: -2px;
}
.hero__role {
  font-size: 0.9rem; color: var(--accent); font-weight: 600;
  letter-spacing: 1px; margin-bottom: 18px; opacity: 0.85;
}
.hero__tagline {
  font-size: 1.15rem; color: var(--text-muted); margin-bottom: 44px; max-width: 520px;
}
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* ===== SECTIONS ===== */
.section { padding: 110px 0; }
.section--dark { background: var(--bg-section); }
.section__title {
  font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 900;
  margin-bottom: 12px; letter-spacing: -1px;
}
.section__sub { color: var(--text-muted); margin-bottom: 60px; font-size: 1rem; }

/* ===== ABOUT ===== */
.about__grid { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 72px; align-items: start; }
.about__sub { font-size: 1rem; color: var(--accent); font-weight: 600; letter-spacing: 1px; margin-bottom: 20px; text-transform: uppercase; }
.about__text p { color: var(--text-muted); margin-bottom: 16px; font-size: 1rem; }
.about__text strong { color: var(--text); }
.about__badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 24px; }
.about__badge {
  background: rgba(30,111,255,0.1); border: 1px solid var(--border);
  color: var(--accent); padding: 6px 16px; border-radius: 20px; font-size: 0.8rem; font-weight: 600;
}
.about__stats { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.stat {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 20px; text-align: center;
  transition: var(--transition);
}
.stat:hover { border-color: var(--accent); box-shadow: 0 0 20px var(--accent-glow); }
.stat__number { font-size: 2.6rem; font-weight: 900; color: var(--accent); }
.stat__label { display: block; color: var(--text-muted); font-size: 0.8rem; margin-top: 4px; line-height: 1.3; }

/* ===== SKILLS ===== */
.skills__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.skill-category {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px 22px;
  transition: var(--transition);
}
.skill-category:hover { border-color: var(--accent); transform: translateY(-4px); }
.skill-category__icon { font-size: 2rem; margin-bottom: 12px; }
.skill-category h4 { font-size: 0.95rem; font-weight: 700; margin-bottom: 16px; color: var(--text); }
.skill-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-tag {
  background: rgba(30,111,255,0.1); color: var(--text-muted);
  border: 1px solid var(--border); padding: 4px 12px;
  border-radius: 20px; font-size: 0.75rem; font-weight: 500;
}
.skill-tag--main {
  background: rgba(30,111,255,0.2); color: var(--accent);
  border-color: rgba(30,111,255,0.4); font-weight: 700;
}

/* ===== PROJECTS ===== */
.projects__grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px; margin-bottom: 40px; min-height: 80px;
}
.projects__empty {
  grid-column: 1/-1; color: var(--text-muted); text-align: center;
  padding: 48px; border: 1px dashed var(--border); border-radius: var(--radius);
}
.project-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 28px;
  transition: var(--transition); position: relative; overflow: hidden;
}
.project-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: linear-gradient(90deg, var(--accent), #38bdf8);
}
.project-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: var(--accent); }
.project-card__date { font-size: 0.72rem; color: var(--text-muted); margin-bottom: 10px; letter-spacing: 0.5px; }
.project-card__title { font-size: 1.15rem; font-weight: 700; margin-bottom: 10px; }
.project-card__desc { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 16px; line-height: 1.5; }
.project-card__tags { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tag {
  background: rgba(30,111,255,0.12); color: var(--accent);
  padding: 3px 12px; border-radius: 20px; font-size: 0.72rem; font-weight: 600;
}
.project-card__link { color: var(--accent); font-size: 0.85rem; font-weight: 600; }
.project-card__link:hover { text-decoration: underline; }
.project-card__remove {
  position: absolute; top: 14px; right: 14px;
  background: none; border: none; color: var(--text-muted);
  cursor: pointer; font-size: 0.9rem; transition: var(--transition);
  width: 28px; height: 28px; display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
}
.project-card__remove:hover { color: #ff4d6d; background: rgba(255,77,109,0.1); }
.projects__add { text-align: center; }

/* ===== PRICING ===== */
.pricing__toggle { display: flex; align-items: center; gap: 16px; margin-bottom: 52px; font-size: 0.9rem; }
.toggle { position: relative; display: inline-block; width: 52px; height: 28px; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle__slider {
  position: absolute; cursor: pointer; inset: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 28px; transition: var(--transition);
}
.toggle__slider::before {
  content: ''; position: absolute; height: 20px; width: 20px;
  left: 3px; bottom: 3px; background: var(--accent);
  border-radius: 50%; transition: var(--transition);
}
.toggle input:checked + .toggle__slider { background: rgba(30,111,255,0.12); }
.toggle input:checked + .toggle__slider::before { transform: translateX(24px); }
.badge {
  background: var(--accent); color: #fff;
  font-size: 0.68rem; font-weight: 700; padding: 2px 8px;
  border-radius: 20px; vertical-align: middle;
}

.pricing__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; align-items: start; margin-bottom: 24px; }
.pricing__card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 36px 28px;
  transition: var(--transition); position: relative;
}
.pricing__card:hover { border-color: var(--accent); box-shadow: var(--shadow); }
.pricing__card--featured {
  background: linear-gradient(145deg, rgba(30,111,255,0.1) 0%, var(--bg-card) 100%);
  border-color: var(--accent); transform: scale(1.04);
}
.pricing__badge {
  position: absolute; top: -14px; left: 50%; transform: translateX(-50%);
  background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700;
  padding: 4px 18px; border-radius: 20px; white-space: nowrap;
}
.pricing__tier { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; color: var(--accent); margin-bottom: 16px; }
.pricing__price { display: flex; align-items: baseline; gap: 4px; margin-bottom: 12px; }
.price__currency { font-size: 1.4rem; font-weight: 700; }
.price__amount { font-size: 3.2rem; font-weight: 900; line-height: 1; }
.price__period { color: var(--text-muted); font-size: 0.88rem; }
.pricing__desc { color: var(--text-muted); font-size: 0.88rem; margin-bottom: 24px; line-height: 1.5; }
.pricing__features { margin-bottom: 32px; display: flex; flex-direction: column; gap: 10px; }
.pricing__features li { font-size: 0.88rem; }
.pricing__features li.disabled { color: var(--text-muted); }
.pricing__note { text-align: center; color: var(--text-muted); font-size: 0.82rem; margin-top: 8px; }

/* ===== CONTACT ===== */
.contact__wrapper { display: grid; grid-template-columns: 1fr 1.6fr; gap: 64px; align-items: start; }
.contact__info { display: flex; flex-direction: column; gap: 28px; }
.contact__block h4 { font-size: 1rem; font-weight: 700; margin-bottom: 4px; }
.contact__block p { color: var(--text-muted); font-size: 0.85rem; margin-bottom: 4px; }
.contact__block a {
  display: block; color: var(--accent); font-size: 0.88rem;
  font-weight: 500; transition: var(--transition);
}
.contact__block a:hover { text-decoration: underline; }
.contact__form { display: flex; flex-direction: column; gap: 14px; }
.form__row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact__form input,
.contact__form textarea {
  background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 13px 18px;
  font-family: inherit; font-size: 0.9rem; transition: var(--transition); width: 100%;
}
.contact__form input:focus,
.contact__form textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.contact__form input::placeholder,
.contact__form textarea::placeholder { color: var(--text-muted); }
.contact__form textarea { resize: vertical; }
.form__success { display: none; color: #34d399; text-align: center; font-weight: 600; font-size: 0.9rem; }
.form__success.show { display: block; }
.form__error { display: none; color: #ff4d6d; text-align: center; font-weight: 600; font-size: 0.9rem; }
.form__error.show { display: block; }

/* ===== FOOTER ===== */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer__inner { text-align: center; }
.footer__brand { font-size: 1.3rem; font-weight: 900; letter-spacing: 2px; margin-bottom: 10px; }
.footer p { color: var(--text-muted); font-size: 0.85rem; }
.footer__copy { margin-top: 8px; font-size: 0.78rem; }

/* ===== MODAL ===== */
.modal {
  display: none; position: fixed; inset: 0; z-index: 200;
  background: rgba(0,0,0,0.8); align-items: center; justify-content: center;
  backdrop-filter: blur(4px);
}
.modal.open { display: flex; }
.modal__box {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 40px; width: 100%; max-width: 500px;
  display: flex; flex-direction: column; gap: 14px;
}
.modal__box h3 { font-size: 1.4rem; font-weight: 700; }
.modal__box p { color: var(--text-muted); font-size: 0.85rem; }
.modal__box input {
  background: var(--bg); border: 1px solid var(--border);
  color: var(--text); border-radius: 8px; padding: 12px 16px;
  font-family: inherit; font-size: 0.9rem; width: 100%;
}
.modal__box input:focus { outline: none; border-color: var(--accent); }
.modal__box input::placeholder { color: var(--text-muted); }
.modal__actions { display: flex; gap: 12px; margin-top: 4px; }

/* ===== THEMES ===== */
[data-theme="light"] {
  --bg: #f0f4f8;
  --bg-card: #ffffff;
  --bg-section: #e4eaf3;
  --text: #0d1b2e;
  --text-muted: #4a6080;
  --border: rgba(30, 111, 255, 0.18);
  --shadow: 0 8px 40px rgba(0, 20, 80, 0.1);
}
[data-theme="light"] .nav {
  background: rgba(240, 244, 248, 0.92);
}
[data-theme="light"] .nav__links {
  background: var(--bg);
}
[data-theme="light"] .hero__blob {
  background: radial-gradient(circle at center, rgba(30,111,255,0.12) 0%, transparent 68%);
}

[data-theme="classic"] {
  --accent: #00d4aa;
  --accent-dark: #00a88a;
  --accent-glow: rgba(0, 212, 170, 0.22);
  --bg: #0d0d0d;
  --bg-card: #161616;
  --bg-section: #111111;
  --text: #e8e8e8;
  --text-muted: #888888;
  --border: rgba(0, 212, 170, 0.18);
  --shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

/* ===== THEME BUTTON ===== */
.nav__controls {
  display: flex; align-items: center; gap: 10px;
}
.theme-btn {
  background: rgba(30, 111, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--text);
  width: 36px; height: 36px;
  border-radius: 50%;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
}
.theme-btn:hover {
  background: rgba(30, 111, 255, 0.18);
  border-color: var(--accent);
  transform: rotate(20deg) scale(1.1);
}
.nav__logout {
  font-size: 0.78rem !important;
  padding: 6px 14px !important;
}
.lang-btn {
  background: rgba(30, 111, 255, 0.08);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0 10px; height: 36px;
  border-radius: 8px;
  font-size: 0.75rem; font-weight: 700; letter-spacing: 1px;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
  font-family: inherit;
}
.lang-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ===== LOGIN MODAL ===== */
.modal__lock {
  font-size: 2rem; text-align: center; margin-bottom: 4px;
}
.login__error {
  color: #ff4d6d; font-size: 0.82rem; min-height: 1.2em; text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .skills__grid { grid-template-columns: repeat(2, 1fr); }
  .pricing__grid { grid-template-columns: 1fr; max-width: 440px; margin: 0 auto 24px; }
  .pricing__card--featured { transform: none; }
}
@media (max-width: 768px) {
  .nav { padding: 16px 24px; }
  .nav__links {
    display: none; flex-direction: column;
    position: absolute; top: 70px; left: 0; right: 0;
    background: var(--bg); padding: 24px; border-bottom: 1px solid var(--border);
    gap: 20px;
  }
  .nav__links.open { display: flex; }
  .nav__burger { display: block; }
  .hero { padding: 120px 24px 80px; }
  .about__grid { grid-template-columns: 1fr; gap: 44px; }
  .about__stats { grid-template-columns: 1fr 1fr; }
  .contact__wrapper { grid-template-columns: 1fr; gap: 40px; }
  .form__row { grid-template-columns: 1fr; }
  .skills__grid { grid-template-columns: 1fr; }
}