/* ============================================================
   Smart Invest Academy — Design System
   ============================================================ */

:root {
  --color-bg:        #000000;
  --color-bg-elev:   #111111;
  --color-bg-card:   #1a1a1a;
  --color-bg-input:  #0f0f0f;
  --color-border:    #2a2a2a;
  --color-text:      #ffffff;
  --color-text-muted:#b8b8b8;
  --color-accent:    #c9a14a;
  --color-accent-2:  #2563eb;
  --color-danger:    #ef4444;
  --color-success:   #10b981;

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --container: 1200px;
  --radius:    12px;
  --radius-sm: 6px;
  --radius-lg: 20px;

  --space-1:  4px;
  --space-2:  8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;

  --shadow-md: 0 6px 24px rgba(0,0,0,.45);
  --shadow-lg: 0 16px 40px rgba(0,0,0,.6);
  --transition: 180ms ease;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, picture, svg { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }
a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: #e5bf6c; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 var(--space-3); font-weight: 700; }
h1 { font-size: clamp(2rem, 4vw + .5rem, 3.5rem); letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 2.5vw + .5rem, 2.5rem); letter-spacing: -.01em; }
h3 { font-size: 1.25rem; }
p { margin: 0 0 var(--space-3); }
.muted { color: var(--color-text-muted); }

/* ---------- A11y ---------- */
.skip-link {
  position: absolute; top: -100px; left: 8px;
  background: var(--color-accent); color: #000;
  padding: 8px 12px; border-radius: var(--radius-sm);
  z-index: 1000; transition: top var(--transition);
}
.skip-link:focus { top: 8px; }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

/* ---------- Layout ---------- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(0,0,0,.85);
  backdrop-filter: saturate(150%) blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.site-header__inner {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  gap: var(--space-3);
}
.logo { display: inline-flex; align-items: center; gap: var(--space-2); color: var(--color-text); font-weight: 700; }
.logo__img { height: 40px; width: auto; display: block; }
@media (max-width: 540px) { .logo__img { height: 30px; } }

.primary-nav ul {
  display: flex; gap: var(--space-4); align-items: center;
  list-style: none; padding: 0; margin: 0;
}
.primary-nav a {
  color: var(--color-text); padding: var(--space-1) 0;
  border-bottom: 2px solid transparent; transition: border-color var(--transition);
}
.primary-nav a:hover, .primary-nav a.is-active { color: var(--color-accent); border-color: var(--color-accent); }

.nav-toggle {
  display: none; background: transparent; border: 0; padding: var(--space-2);
}
.nav-toggle span { display: block; width: 24px; height: 2px; background: var(--color-text); margin: 5px 0; transition: var(--transition); }

@media (max-width: 820px) {
  .nav-toggle { display: block; }
  .primary-nav {
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--color-bg-elev); border-bottom: 1px solid var(--color-border);
    display: none; padding: var(--space-3) var(--space-4);
  }
  .primary-nav.is-open { display: block; }
  .primary-nav ul { flex-direction: column; align-items: stretch; gap: var(--space-2); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-2);
  padding: 12px 22px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  font-weight: 600; letter-spacing: .02em;
  background: transparent; color: var(--color-text);
  transition: transform var(--transition), background var(--transition), color var(--transition), border-color var(--transition);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn--primary { background: var(--color-accent); color: #000; }
.btn--primary:hover { background: #e5bf6c; color: #000; }
.btn--ghost { border-color: var(--color-border); color: var(--color-text); }
.btn--ghost:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn--block { width: 100%; }

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-8) 0;
  background:
    radial-gradient(60% 70% at 70% 10%, rgba(201,161,74,.18), transparent 60%),
    radial-gradient(40% 50% at 10% 100%, rgba(37,99,235,.18), transparent 60%),
    var(--color-bg);
}
.hero__lead { font-size: 1.125rem; color: var(--color-text-muted); max-width: 60ch; margin-bottom: var(--space-4); }
.hero__cta { display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-4); }

/* ---------- Section ---------- */
.section { padding: var(--space-7) 0; }
.section--elev { background: var(--color-bg-elev); }
.section__head { max-width: 760px; margin-bottom: var(--space-5); }
.section__head h2 { margin-bottom: var(--space-2); }
.section__eyebrow { color: var(--color-accent); text-transform: uppercase; letter-spacing: .12em; font-size: .8rem; font-weight: 700; margin-bottom: var(--space-2); }

/* ---------- Grid ---------- */
.grid { display: grid; gap: var(--space-4); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.span-2 { grid-column: span 2; }
@media (max-width: 720px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .span-2 { grid-column: span 1; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--space-4);
  transition: border-color var(--transition), transform var(--transition);
}
.card:hover { border-color: var(--color-accent); transform: translateY(-2px); }
.card__title { margin: 0 0 var(--space-2); }
.card__meta { color: var(--color-text-muted); font-size: .9rem; margin-bottom: var(--space-3); display: flex; flex-wrap: wrap; gap: var(--space-3); }
.card__price { font-size: 1.25rem; font-weight: 700; color: var(--color-accent); }
.card__price-strike { color: var(--color-text-muted); text-decoration: line-through; font-weight: 400; font-size: 1rem; margin-left: 8px; }
.card__highlights { padding-left: 1.2em; margin: var(--space-3) 0; }
.card__highlights li { margin-bottom: var(--space-1); }

/* ---------- Speakers ---------- */
.speakers { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.speaker { text-align: center; }
.speaker__img {
  width: 180px; height: 180px; border-radius: 50%;
  object-fit: cover; margin: 0 auto var(--space-3);
  border: 2px solid var(--color-border);
}
.speaker__img--placeholder {
  background: var(--color-bg-card);
  padding: 24px;
  filter: invert(1);
  object-fit: contain;
}
.speaker__name { font-weight: 700; }
.speaker__role { color: var(--color-text-muted); font-size: .9rem; }

/* ---------- Forms / Pop-ups ---------- */
.popup {
  border: 1px solid var(--color-border);
  background: var(--color-bg-elev);
  color: var(--color-text);
  border-radius: var(--radius);
  padding: 0;
  max-width: 560px; width: 92%;
  box-shadow: var(--shadow-lg);
}
.popup--wide { max-width: 720px; }
.popup::backdrop { background: rgba(0,0,0,.7); backdrop-filter: blur(2px); }

.popup__form { padding: var(--space-5); position: relative; }
.popup__form > * + * { margin-top: var(--space-3); }
.popup__close {
  position: absolute; top: 12px; right: 12px;
  width: 36px; height: 36px;
  border: 0; background: transparent; color: var(--color-text);
  font-size: 1.75rem; line-height: 1; border-radius: 50%;
}
.popup__close:hover { background: var(--color-bg-card); }

label { display: block; font-size: .9rem; color: var(--color-text-muted); }
input, textarea, select {
  width: 100%;
  margin-top: var(--space-1);
  padding: 10px 12px;
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font: inherit;
}
input:focus, textarea:focus, select:focus { border-color: var(--color-accent); outline: none; }
textarea { min-height: 120px; resize: vertical; }
.consent { font-size: .85rem; color: var(--color-text-muted); display: flex; align-items: flex-start; gap: 8px; }
.consent input { width: auto; margin-top: 4px; }
.hp { position: absolute !important; left: -10000px !important; width: 1px !important; height: 1px !important; opacity: 0 !important; }
.form__status { min-height: 1.5em; font-size: .9rem; }
.form__status.is-error { color: var(--color-danger); }
.form__status.is-success { color: var(--color-success); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--color-bg-elev);
  border-top: 1px solid var(--color-border);
  padding: var(--space-6) 0;
  margin-top: var(--space-8);
}
.site-footer__inner {
  display: grid; gap: var(--space-4);
  grid-template-columns: 1fr auto 1fr; align-items: center;
}
.site-footer__nav { display: flex; gap: var(--space-4); justify-content: center; }
.site-footer__nav a { color: var(--color-text); }
.site-footer__copy { text-align: right; margin: 0; }
@media (max-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr; text-align: center; }
  .site-footer__copy { text-align: center; }
  .site-footer__nav { justify-content: center; }
}

/* ---------- Reveal-on-scroll ---------- */
.reveal { opacity: 0; transform: translateY(16px); transition: opacity 600ms ease, transform 600ms ease; }
.reveal.is-visible { opacity: 1; transform: translateY(0); }

/* ---------- Misc ---------- */
.badge {
  display: inline-block; padding: 4px 10px;
  background: rgba(201,161,74,.15); color: var(--color-accent);
  border-radius: 999px; font-size: .75rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase;
}
.tag { color: var(--color-text-muted); font-size: .85rem; }
.event-img { aspect-ratio: 16/9; object-fit: cover; border-radius: var(--radius); width: 100%; }
.event-img--placeholder {
  aspect-ratio: 16/9;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg-elev));
  border-radius: var(--radius);
  display: grid; place-items: center;
  color: var(--color-text-muted);
}

/* ---------- Admin (kompakt) ---------- */
.admin-shell { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-sidebar { background: var(--color-bg-elev); border-right: 1px solid var(--color-border); padding: var(--space-4); }
.admin-sidebar h1 { font-size: 1rem; margin-bottom: var(--space-4); }
.admin-sidebar nav a { display: block; padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); color: var(--color-text); }
.admin-sidebar nav a.is-active, .admin-sidebar nav a:hover { background: var(--color-bg-card); color: var(--color-accent); }
.admin-main { padding: var(--space-5); }
.admin-table { width: 100%; border-collapse: collapse; }
.admin-table th, .admin-table td { padding: 10px 12px; border-bottom: 1px solid var(--color-border); text-align: left; vertical-align: top; }
.admin-table th { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--color-text-muted); }
.admin-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.admin-toolbar { display: flex; gap: var(--space-3); justify-content: space-between; align-items: center; margin-bottom: var(--space-4); flex-wrap: wrap; }
.fieldset { background: var(--color-bg-card); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--space-4); margin-bottom: var(--space-4); }
.fieldset legend { font-weight: 700; padding: 0 8px; }
.help { font-size: .8rem; color: var(--color-text-muted); margin-top: 4px; }
.error-msg { background: rgba(239,68,68,.1); color: var(--color-danger); border: 1px solid var(--color-danger); padding: var(--space-3); border-radius: var(--radius-sm); margin-bottom: var(--space-3); }
.success-msg { background: rgba(16,185,129,.1); color: var(--color-success); border: 1px solid var(--color-success); padding: var(--space-3); border-radius: var(--radius-sm); margin-bottom: var(--space-3); }

@media (max-width: 820px) {
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar { border-right: 0; border-bottom: 1px solid var(--color-border); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  .reveal { opacity: 1; transform: none; }
}