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

:root {
  --font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  --radius: 8px;

  /* Typography scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.25rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.75rem;
  --font-size-hero: 3.5rem;

  --line-height-tight: 1.2;
  --line-height-base: 1.6;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  /* COLOR PALETTE (Cosmic Purple Theme) */
  --color-bg: #08041A;           /* dark space background */
  --color-bg-alt: #130A2A;
  --color-bg-card: rgba(255,255,255,0.04); /* subtle card backdrop (kept translucent, card itself is transparent) */

  --color-primary: #9B3DFF;       /* vivid violet */
  --color-secondary: #F5A623;     /* golden accent */
  --color-accent: #9B3DFF;

  --color-text: #EDE8FF;          /* soft lavender body text (on dark bg) */
  --color-text-muted: #9070C0;      /* muted lavender */
  --color-text-on-primary: #F2F2F2; /* contrast on primary (primary is light) */

  --color-border: rgba(255,255,255,0.25);
  --color-shadow: rgba(0,0,0,0.4);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
html, body { overflow-x: hidden; max-width: 100%; background: var(--color-bg); color: var(--color-text); font-family: var(--font-family); line-height: var(--line-height-base); }

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

.container { width: 100%; margin: 0 auto; padding: 0 1rem; }

.site-header { position: sticky; top: 0; z-index: 1000; min-height: 64px; overflow: visible; background: rgba(0,0,0,0.0); }
.site-header .container { display:flex; align-items:center; gap:1rem; padding:0.5rem 1rem; }

.site-logo { display:flex; align-items:center; justify-content: flex-start; flex-shrink:0; overflow:hidden; max-height:52px; text-decoration:none; }
.site-logo img { height:44px; width:auto; max-width:160px; object-fit:contain; display:block; }

.nav-toggle-input { position:absolute; opacity:0; pointer-events:none; width:0; height:0; }
.nav-toggle-label { display:flex; flex-direction:column; justify-content:center; gap:5px; cursor:pointer; margin-left:auto;
  padding:0.4rem 0.6rem; z-index:200; border-radius:6px;
  background: rgba(0,0,0,0.45); border:1.5px solid rgba(255,255,255,0.7);
}
.nav-toggle-label span { display:block; width:24px; height:2px; background-color:#ffffff; border-radius:2px; transition:0.2s ease; }

/* Mobile navigation panel */
.site-nav { display:none; position:absolute; top:100%; left:0; width:100%; z-index:500;
  background: var(--color-bg); border-top:1px solid var(--color-border);
  box-shadow: 0 4px 16px rgba(0,0,0,0.18);
}
.nav-list { display:flex; gap:1rem; padding:0.5rem; margin:0; list-style:none; }

.nav-link { color: var(--color-text); text-decoration:none; font-size: var(--font-size-sm); padding:0.5rem 1rem; display:block; position:relative; transition: color 0.2s ease, transform 0.2s ease;
  border-radius:4px;
}
.nav-link:hover { color: #ffffff; }
.nav-link::after { content:''; position:absolute; left:0; bottom:0; height:2px; width:100%; background: var(--color-primary);
  transform: scaleX(0); transform-origin: right; transition: transform 0.2s ease; }
.nav-link:hover::after, .nav-link:focus-within::after { transform: scaleX(1); transform-origin: left; }

/* Dropdown NAV (CSS-ONLY) */
.nav-dropdown { position:relative; }
.nav-dropdown-toggle { cursor: pointer; white-space:nowrap; }
.nav-dropdown-menu { display:none; position:absolute; top:100%; left:0; min-width:200px; z-index:9999;
  list-style:none; margin:0; padding:0.5rem 0; background: var(--color-bg-card);
  border:1px solid var(--color-border); border-radius: var(--radius); box-shadow:0 8px 24px rgba(0,0,0,0.18); white-space:nowrap;
}
.nav-dropdown:hover > .nav-dropdown-menu, .nav-dropdown:focus-within > .nav-dropdown-menu { display:block; }
.nav-dropdown-menu .nav-link { display:block; padding:0.5rem 1.25rem; width:100%; border-bottom:0; }
.nav-dropdown-menu .nav-link:hover { background: var(--color-bg-alt); }

/* Mobile dropdown adjustments */
@media (max-width: 767px) {
  .nav-dropdown-menu { position: static; box-shadow: none; border: none; padding-left: 1rem; display: none; }
  .nav-dropdown:focus-within > .nav-dropdown-menu { display: block; }

  .nav-list { flex-direction: column; align-items: stretch; }

  /* Mobile mobile behavior for dropdowns: keep indented */
  .site-nav { display: none; }
  .nav-toggle-input:checked ~ .site-nav { display: block; }
  .site-nav { display: none; }
  .nav-dropdown-menu { position: static; display: none; padding-left: 1rem; }
  .nav-toggle-label { display:flex; }
  .hero { padding: 3rem 1rem; }
}
@media (min-width: 768px) {
  /* Tablet: hamburger hidden, nav inline */
  .nav-toggle-label { display:none; }
  .site-nav { display:flex; position: static; background: transparent; border-top: none; box-shadow:none; }
  .nav-list { display:flex; flex-direction: row; flex-wrap: nowrap; align-items:center; gap:1.5rem; padding:0; margin:0; list-style:none; }
  .nav-link { font-size: var(--font-size-sm); padding:0.4rem 0.75rem; border-bottom: none; white-space:nowrap; }
  .nav-dropdown-menu { position: absolute; top: 100%; left:0; min-width: 200px; background: var(--color-bg-card); border:1px solid var(--color-border); border-radius: var(--radius); box-shadow: 0 8px 24px rgba(0,0,0,0.18); display:none; }
  .nav-dropdown:hover > .nav-dropdown-menu, .nav-dropdown:focus-within > .nav-dropdown-menu { display:block; }
}
@media (min-width: 1280px) {
  .container { max-width: 1280px; padding:0 2rem; }
  .site-header { min-height: 64px; }
  .hero { min-height: 70vh; }
  .hero h1 { font-size: var(--font-size-hero); }
  .section { padding: 4rem 0; }
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
  .footer-inner { display:flex; flex-direction: row; justify-content: space-between; align-items: center; padding: 0; }
  .nav-link { /* keep tablet/desktop sizing as per 768 breakpoint */ }
}

/* Base layout and components (desktop/tablet/mobile defaults) */
.hero { min-height: 60vh; display:flex; align-items:center; justify-content:center; text-align:center;
  padding: 4rem 1rem; color:#fff;
  background: linear-gradient(135deg, rgba(155,61,255,0.95) 0%, rgba(8,4,26,0.95) 60%), radial-gradient(circle at 20% 0%, rgba(160,80,200,0.4), transparent 40%);
}
.hero h1 { font-size: var(--font-size-2xl); margin:0 0 .5rem; letter-spacing: .2px; }
.hero p { font-size: var(--font-size-base); color:#F0E8FF; opacity:.95; }

.section { padding: 2rem 0; }
.section-title { font-size: var(--font-size-2xl); margin: 0 0 .75rem; color: var(--color-text); }

/* Card styles */
.card { display:flex; flex-direction:column; border-radius: var(--radius); border: 2px solid var(--color-primary);
  background: transparent; overflow: hidden; transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}
.card:hover { transform: translateY(-4px); background: linear-gradient(135deg, rgba(155,61,255,0.15), rgba(8,4,26,0.15)); box-shadow: 0 12px 24px rgba(0,0,0,0.25); }
.card img { width:100%; aspect-ratio:16/9; object-fit: cover; display:block; border-radius: var(--radius) var(--radius) 0 0; }
.card-content { padding: .75rem 1rem; display:flex; flex-direction:column; gap:.25rem; }

/* Card grid */
.card-grid { display:grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 768px) {
  .card-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}

/* Buttons */
.btn { display:inline-block; padding: .75rem 1rem; border-radius: 6px; border: 0; background: var(--color-primary); color: var(--color-text-on-primary);
  font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); text-align:center; text-decoration:none; cursor:pointer;
  transition: filter 0.2s ease, transform 0.2s ease;
}
.btn:hover { filter: brightness(0.95); transform: translateY(-1px); }
.btn-primary { background: var(--color-primary); color: var(--color-text-on-primary); border: 0; }
.btn-secondary { background: transparent; color: var(--color-text); border: 2px solid var(--color-primary); }

/* Form elements */
label { display:block; font-size: var(--font-size-sm); color: var(--color-text); margin-bottom: .25rem; }
input, textarea, select { width: 100%; padding: .75rem; border:1px solid var(--color-border); border-radius: 6px; background: rgba(255,255,255,0.04); color: var(--color-text); font-family: var(--font-family); }
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(155,61,255,0.25); }

/* Tables */
table { width:100%; border-collapse: collapse; }
th, td { padding: .75rem; border-bottom: 1px solid var(--color-border); }

/* Utilities */
.text-center { text-align: center; }
.mt-1 { margin-top: .25rem; } .mt-2 { margin-top: .5rem; } .mt-3 { margin-top: 1rem; } .mt-4 { margin-top: 1.5rem; }
.hidden { display: none !important; }

/* Footer */
.site-footer { background: linear-gradient(135deg, #04041a, #090722); color: var(--color-text); padding: 2rem 0; }
.footer-inner { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 1rem; display:flex; align-items:center; justify-content: space-between; gap:1rem; }
.footer-inner a { color: var(--color-text); text-decoration: none; }
.footer-inner a:hover { text-decoration: underline; }

/* FAQ accordion (CSS-only) */
.faq-section { padding: 2rem 0; }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius); margin-bottom: 0.75rem; background: var(--color-bg-card); overflow: hidden; transition: all 0.2s ease; }
.faq-item[open] { border-color: var(--color-primary); box-shadow: 0 2px 12px var(--color-shadow); }
.faq-question { display:flex; justify-content: space-between; align-items: center; padding: 1rem 1.25rem; cursor: pointer; font-weight: var(--font-weight-bold); font-size: var(--font-size-md); list-style: none; user-select: none; }
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after { content: "+"; font-size: 1.5rem; font-weight: 300; color: var(--color-primary); flex-shrink: 0; transition: transform 0.2s ease; }
.faq-item[open] > .faq-question::after { content: "−"; }
.faq-answer { padding: 0 1.25rem 1.25rem; border-top: 1px solid var(--color-border); }
.faq-answer p { margin: 0.75rem 0 0; color: var(--color-text-muted); line-height: var(--line-height-base); }

/* Links and text variants */
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Accessibility helpers */
:focus { outline: none; outline: 3px solid rgba(155,61,255,0.6); outline-offset: 2px; }