/* ============================================================
   global.css — Solin Web Design System
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Sora:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Design Tokens ────────────────────────────────────────── */
:root {
  /* Palette */
  --bg0:       #080c12;
  --bg1:       #0d1117;
  --bg2:       #161b22;
  --bg3:       #1c2330;
  --border:    rgba(255,255,255,0.07);
  --border-hi: rgba(255,255,255,0.14);

  --text:      #e6edf3;
  --muted:     #8b949e;
  --muted2:    #4d5561;

  --accent:    #3b82f6;
  --accent-hi: #60a5fa;
  --accent-glow: rgba(59,130,246,0.25);

  --success:   #22c55e;
  --warning:   #f59e0b;
  --error:     #ef4444;
  --info:      #3b82f6;

  /* Typography */
  --font-body:  'Sora', system-ui, sans-serif;
  --font-mono:  'JetBrains Mono', monospace;

  /* Spacing */
  --nav-h:     64px;
  --radius:    12px;
  --radius-sm: 8px;

  /* Transitions */
  --ease:      cubic-bezier(0.4, 0, 0.2, 1);
  --fast:      150ms var(--ease);
  --mid:       250ms var(--ease);
  --slow:      400ms var(--ease);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background: var(--bg0);
  color: var(--text);
  line-height: 1.6;
  min-height: 100dvh;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
img, svg { display: block; max-width: 100%; }
ul { list-style: none; }

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg1); }
::-webkit-scrollbar-thumb { background: var(--bg3); border-radius: 3px; }

/* ── Focus ring ───────────────────────────────────────────── */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ─────────────────────────────────────────────────────────────
   NAV
   ───────────────────────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 clamp(1.25rem, 5vw, 3rem);
  background: rgba(8, 12, 18, 0.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  transition: background var(--mid);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  flex-shrink: 0;
}

.nav__logo-icon {
  width: 28px; height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  /* No background — icon.ico carries its own */
}

.nav__logo-icon img {
  width: 28px; height: 28px;
  object-fit: contain;
  display: block;
  border-radius: 0;
}

/* Fallback letter shown only when ico is missing */
.nav__logo-icon .logo-fallback {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0;
}

.nav__spacer { flex: 1; }

/* Desktop nav links */
.nav__links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav__link {
  padding: 0.45rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius-sm);
  transition: color var(--fast), background var(--fast);
}

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

/* Language dropdown (desktop) */
.nav__lang {
  position: relative;
}

.nav__lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.85rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  border-radius: var(--radius-sm);
  transition: color var(--fast), background var(--fast);
}

.nav__lang-toggle:hover {
  color: var(--text);
  background: var(--border);
}

.nav__lang-toggle svg {
  width: 14px; height: 14px;
  transition: transform var(--fast);
}

.nav__lang.open .nav__lang-toggle svg { transform: rotate(180deg); }

.nav__lang-dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 140px;
  background: var(--bg2);
  border: 1px solid var(--border-hi);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 16px 40px rgba(0,0,0,0.5);
  opacity: 0;
  transform: translateY(-6px) scale(0.97);
  pointer-events: none;
  transition: opacity var(--fast), transform var(--fast);
}

.nav__lang.open .nav__lang-dropdown {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.lang-option {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.65rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  transition: background var(--fast), color var(--fast);
  text-align: left;
}

.lang-option:hover,
.lang-option.active {
  background: var(--border);
  color: var(--text);
}

.lang-option.active::after {
  content: '';
  margin-left: auto;
  width: 6px; height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

/* Hamburger button */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px; height: 40px;
  gap: 5px;
  border-radius: var(--radius-sm);
  transition: background var(--fast);
  flex-shrink: 0;
}

.hamburger:hover { background: var(--border); }

.hamburger__bar {
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transform-origin: center;
  transition: transform var(--mid), opacity var(--mid), width var(--mid);
}

.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(2) {
  opacity: 0;
  width: 0;
}
.hamburger[aria-expanded="true"] .hamburger__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ─────────────────────────────────────────────────────────────
   MOBILE MENU DRAWER
   ───────────────────────────────────────────────────────────── */
.menu-overlay {
  position: fixed;
  inset: 0;
  z-index: 198;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mid);
}

.menu-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu {
  position: fixed;
  top: 0; right: 0;
  z-index: 199;
  width: min(320px, 90vw);
  height: 100dvh;
  background: var(--bg2);
  border-left: 1px solid var(--border-hi);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--slow);
  overflow-y: auto;
}

.mobile-menu.open {
  transform: translateX(0);
}

.mobile-menu__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
}

.mobile-menu__logo {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.mobile-menu__close {
  width: 36px; height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--muted);
  transition: background var(--fast), color var(--fast);
}

.mobile-menu__close:hover {
  background: var(--border);
  color: var(--text);
}

.mobile-menu__body {
  flex: 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.mobile-menu__item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  transition: background var(--fast), color var(--fast);
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.mobile-menu__item:hover {
  background: var(--border);
  color: var(--text);
}

.mobile-menu__icon {
  width: 36px; height: 36px;
  background: var(--bg3);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.mobile-menu__divider {
  height: 1px;
  background: var(--border);
  margin: 0.75rem 0;
}

.mobile-menu__section-title {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted2);
  padding: 0.25rem 1rem;
  margin-top: 0.5rem;
}

/* Language options inside mobile menu */
.lang-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  padding: 0.5rem 1rem;
}

.lang-chip {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  padding: 0.65rem 0.5rem;
  border-radius: var(--radius);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  background: var(--bg3);
  border: 1px solid transparent;
  transition: background var(--fast), color var(--fast), border-color var(--fast);
  cursor: pointer;
  border-style: none;
  font-family: inherit;
}

.lang-chip:hover {
  background: var(--border);
  color: var(--text);
}

.lang-chip.active {
  border: 1px solid var(--accent);
  color: var(--accent-hi);
  background: rgba(59,130,246,0.08);
}

.lang-chip__flag {
  font-size: 1.25rem;
  line-height: 1;
}

/* ─────────────────────────────────────────────────────────────
   INFO MODAL
   ───────────────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 298;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(6px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--mid);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.modal-overlay.visible {
  opacity: 1;
  pointer-events: auto;
}

.modal {
  position: relative;
  z-index: 299;
  width: 100%;
  max-width: 440px;
  background: var(--bg2);
  border: 1px solid var(--border-hi);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6);
  transform: scale(0.96) translateY(8px);
  opacity: 0;
  transition: transform var(--mid), opacity var(--mid);
  pointer-events: none;
}

.modal-overlay.visible .modal {
  transform: scale(1) translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.modal__title {
  font-size: 1.1rem;
  font-weight: 600;
}

.modal__close {
  width: 32px; height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--muted);
  transition: background var(--fast), color var(--fast);
}

.modal__close:hover {
  background: var(--border);
  color: var(--text);
}

.modal__body {
  font-size: 0.9rem;
  color: var(--muted);
  line-height: 1.7;
}

/* ─────────────────────────────────────────────────────────────
   FLASH MESSAGES
   ───────────────────────────────────────────────────────────── */
.flash-container {
  position: fixed;
  top: calc(var(--nav-h) + 12px);
  right: 1rem;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-width: 360px;
  pointer-events: none;
}

.flash {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1rem;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid transparent;
  animation: flashIn 0.2s var(--ease) forwards;
  pointer-events: auto;
}

.flash--success { background: rgba(34,197,94,0.1);  border-color: rgba(34,197,94,0.25);  color: #86efac; }
.flash--error   { background: rgba(239,68,68,0.1);  border-color: rgba(239,68,68,0.25);  color: #fca5a5; }
.flash--warning { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.25); color: #fcd34d; }
.flash--info    { background: rgba(59,130,246,0.1); border-color: rgba(59,130,246,0.25); color: #93c5fd; }

@keyframes flashIn {
  from { opacity: 0; transform: translateX(12px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* ─────────────────────────────────────────────────────────────
   RESPONSIVE — hide desktop nav, show hamburger
   ───────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav__links { display: none; }
  .hamburger  { display: flex; }
}

@media (min-width: 769px) {
  .hamburger    { display: none; }
  .mobile-menu,
  .menu-overlay { display: none; }
}