/* VIDIUM Design System — Component Layer */
/* Depends on tokens.css. Class-based, mode-aware, copy-paste ready. */
/* Prefix: .vd-  ·  works in both Control (light) and Signal (dark) modes. */

/* ===================================================================== */
/* LAYOUT                                                                */
/* ===================================================================== */
.vd-container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 56px);
}
.vd-section {
  padding-block: clamp(56px, 8vw, 112px);
}
.vd-stack    { display: flex; flex-direction: column; }
.vd-row      { display: flex; align-items: center; }
.vd-grid     { display: grid; }
.vd-gap-2 { gap: var(--vd-2); } .vd-gap-3 { gap: var(--vd-3); }
.vd-gap-4 { gap: var(--vd-4); } .vd-gap-5 { gap: var(--vd-5); }
.vd-gap-6 { gap: var(--vd-6); } .vd-gap-8 { gap: var(--vd-8); }

.vd-eyebrow-mark {
  display: inline-flex;
  align-items: center;
  gap: var(--vd-3);
  font-family: var(--vd-font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--vd-fg-faint);
}
.vd-eyebrow-mark::before {
  content: "";
  width: 24px;
  height: 2px;
  background: var(--vd-cyan);
}

/* ===================================================================== */
/* BUTTONS                                                               */
/* ===================================================================== */
.vd-btn {
  --_bg: var(--vd-graphite);
  --_fg: var(--vd-white);
  --_bd: transparent;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--vd-2);
  font-family: var(--vd-font-body);
  font-weight: 600;
  font-size: 15px;
  line-height: 1;
  padding: 13px 22px;
  min-height: 46px;
  border-radius: var(--vd-radius-md);
  border: 1px solid var(--_bd);
  background: var(--_bg);
  color: var(--_fg);
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--vd-dur-fast) var(--vd-ease-control),
              background var(--vd-dur-fast) var(--vd-ease-control),
              border-color var(--vd-dur-fast) var(--vd-ease-control),
              box-shadow var(--vd-dur-fast) var(--vd-ease-control);
}
.vd-btn:hover { transform: translateY(-1px); }
.vd-btn:active { transform: translateY(0); }
.vd-btn:focus-visible { outline: none; box-shadow: 0 0 0 3px color-mix(in srgb, var(--vd-cyan) 55%, transparent); }
.vd-btn svg { width: 18px; height: 18px; }

/* Primary — solid graphite (control) / cyan on dark feel */
[data-mode="signal"] .vd-btn { --_bg: var(--vd-white); --_fg: var(--vd-graphite); }

/* Accent — brand cyan */
.vd-btn--accent { --_bg: var(--vd-cyan); --_fg: var(--vd-graphite); }
.vd-btn--accent:hover { --_bg: #1FB4BB; }

/* Signal — Pulse Lime CTA (use sparingly) */
.vd-btn--signal { --_bg: var(--vd-lime); --_fg: var(--vd-graphite); }
.vd-btn--signal:hover { --_bg: #CBED4A; }

/* Outline */
.vd-btn--outline {
  --_bg: transparent;
  --_fg: var(--vd-fg-strong);
  --_bd: var(--vd-border-strong);
}
.vd-btn--outline:hover { --_bg: var(--vd-bg-elevated); }

/* Ghost */
.vd-btn--ghost {
  --_bg: transparent;
  --_fg: var(--vd-fg-muted);
  --_bd: transparent;
}
.vd-btn--ghost:hover { --_bg: var(--vd-bg-elevated); --_fg: var(--vd-fg-strong); }

/* Sizes */
.vd-btn--sm { font-size: 13px; padding: 9px 14px; min-height: 38px; border-radius: var(--vd-radius-sm); }
.vd-btn--lg { font-size: 17px; padding: 17px 30px; min-height: 56px; }
.vd-btn--block { width: 100%; }
.vd-btn[disabled], .vd-btn--disabled { opacity: 0.4; pointer-events: none; }

/* Text link */
.vd-link {
  color: var(--vd-accent-text);
  text-decoration: none;
  font-weight: 500;
  border-bottom: 1px solid color-mix(in srgb, var(--vd-accent-text) 35%, transparent);
  transition: border-color var(--vd-dur-fast);
}
.vd-link:hover { border-bottom-color: var(--vd-accent-text); }

/* ===================================================================== */
/* STATUS / CHIPS / BADGES                                               */
/* ===================================================================== */
.vd-status {
  display: inline-flex;
  align-items: center;
  gap: var(--vd-2);
  font-family: var(--vd-font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  padding: 5px 11px 5px 9px;
  border-radius: var(--vd-radius-pill);
  border: 1px solid var(--vd-border);
  background: var(--vd-bg-raised);
  color: var(--vd-fg-muted);
}
.vd-status__dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--vd-fg-faint);
  flex-shrink: 0;
}
.vd-status--live {
  color: color-mix(in srgb, var(--vd-graphite) 88%, var(--vd-lime));
  border-color: color-mix(in srgb, var(--vd-lime) 60%, transparent);
  background: color-mix(in srgb, var(--vd-lime) 16%, var(--vd-bg-raised));
}
[data-mode="signal"] .vd-status--live { color: var(--vd-lime); }
.vd-status--live .vd-status__dot {
  background: var(--vd-lime);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--vd-lime) 70%, transparent);
  animation: vd-pulse 1.8s var(--vd-ease-signal) infinite;
}
@keyframes vd-pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--vd-lime) 60%, transparent); }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.vd-status--ok    { color: #4E7A0B; border-color: color-mix(in srgb, var(--vd-success) 50%, transparent); }
[data-mode="signal"] .vd-status--ok { color: var(--vd-success); }
.vd-status--ok .vd-status__dot    { background: var(--vd-success); }
.vd-status--info  { color: var(--vd-cyan-dark); border-color: color-mix(in srgb, var(--vd-cyan) 45%, transparent); }
[data-mode="signal"] .vd-status--info { color: var(--vd-cyan); }
.vd-status--info .vd-status__dot  { background: var(--vd-cyan); }
.vd-status--warn  { color: #9A6200; border-color: color-mix(in srgb, var(--vd-warning) 50%, transparent); }
[data-mode="signal"] .vd-status--warn { color: var(--vd-warning); }
.vd-status--warn .vd-status__dot  { background: var(--vd-warning); }
.vd-status--error { color: #B42318; border-color: color-mix(in srgb, var(--vd-error) 50%, transparent); }
[data-mode="signal"] .vd-status--error { color: var(--vd-error); }
.vd-status--error .vd-status__dot { background: var(--vd-error); }

.vd-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--vd-2);
  font-size: 13px;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: var(--vd-radius-sm);
  background: var(--vd-bg-elevated);
  color: var(--vd-fg-muted);
}
.vd-tag--accent { background: color-mix(in srgb, var(--vd-cyan) 14%, transparent); color: var(--vd-accent-text); }

.vd-count {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 22px; height: 22px; padding: 0 7px;
  border-radius: var(--vd-radius-pill);
  font-family: var(--vd-font-mono); font-size: 11px; font-weight: 600;
  background: var(--vd-cyan); color: var(--vd-graphite);
}

/* ===================================================================== */
/* SURFACES & CARDS                                                      */
/* ===================================================================== */
.vd-surface {
  background: var(--vd-bg-card);
  border: 1px solid var(--vd-border);
  border-radius: var(--vd-radius-lg);
}
.vd-surface--raised { box-shadow: var(--vd-shadow-md); }
.vd-surface--pad   { padding: var(--vd-6); }

/* Service / feature card */
.vd-feature {
  display: flex;
  flex-direction: column;
  gap: var(--vd-3);
  padding: var(--vd-6);
  background: var(--vd-bg-card);
  border: 1px solid var(--vd-border);
  border-radius: var(--vd-radius-lg);
  transition: border-color var(--vd-dur-base) var(--vd-ease-control),
              transform var(--vd-dur-base) var(--vd-ease-control),
              box-shadow var(--vd-dur-base) var(--vd-ease-control);
}
.vd-feature:hover {
  border-color: var(--vd-border-strong);
  transform: translateY(-3px);
  box-shadow: var(--vd-shadow-md);
}
.vd-feature__icon {
  width: 44px; height: 44px;
  display: grid; place-items: center;
  border-radius: var(--vd-radius-md);
  background: var(--vd-bg-elevated);
  color: var(--vd-accent-text);
  margin-bottom: var(--vd-2);
}
.vd-feature__icon svg { width: 22px; height: 22px; }
.vd-feature__title { font-family: var(--vd-font-display); font-weight: 700; font-size: 19px; color: var(--vd-fg-strong); margin: 0; }
.vd-feature__body  { font-size: 15px; line-height: 1.55; color: var(--vd-fg-muted); margin: 0; }
.vd-feature__index { font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.1em; color: var(--vd-fg-faint); }

/* Use-case / case card with media slot */
.vd-case {
  display: flex; flex-direction: column;
  background: var(--vd-bg-card);
  border: 1px solid var(--vd-border);
  border-radius: var(--vd-radius-lg);
  overflow: hidden;
}
.vd-case__media {
  aspect-ratio: 16 / 10;
  background:
    repeating-linear-gradient(135deg, var(--vd-bg-elevated) 0 12px, transparent 12px 24px),
    var(--vd-bg-raised);
  display: grid; place-items: center;
  position: relative;
  border-bottom: 1px solid var(--vd-border);
}
.vd-case__media::after {
  content: attr(data-label);
  font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--vd-fg-faint);
}
.vd-case__body { padding: var(--vd-5); display: flex; flex-direction: column; gap: var(--vd-3); }
.vd-case__title { font-family: var(--vd-font-display); font-weight: 700; font-size: 20px; color: var(--vd-fg-strong); margin: 0; }
.vd-case__meta { display: flex; gap: var(--vd-3); flex-wrap: wrap; }

/* Speaker card */
.vd-speaker { display: flex; flex-direction: column; gap: var(--vd-3); }
.vd-speaker__photo {
  aspect-ratio: 1; border-radius: var(--vd-radius-lg);
  background:
    repeating-linear-gradient(135deg, var(--vd-bg-elevated) 0 12px, transparent 12px 24px),
    var(--vd-bg-raised);
  border: 1px solid var(--vd-border);
  display: grid; place-items: center;
}
.vd-speaker__photo::after { content: "PORTRAIT"; font-family: var(--vd-font-mono); font-size: 10px; letter-spacing: 0.12em; color: var(--vd-fg-faint); }
.vd-speaker__name { font-family: var(--vd-font-display); font-weight: 700; font-size: 17px; color: var(--vd-fg-strong); }
.vd-speaker__role { font-size: 13px; color: var(--vd-fg-muted); }

/* Stat block */
.vd-stat { display: flex; flex-direction: column; gap: 4px; }
.vd-stat__value { font-family: var(--vd-font-display); font-weight: 700; font-size: clamp(32px, 4vw, 52px); letter-spacing: -0.02em; color: var(--vd-fg-strong); line-height: 1; }
.vd-stat__label { font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--vd-fg-faint); }

/* ===================================================================== */
/* FORMS                                                                 */
/* ===================================================================== */
.vd-field { display: flex; flex-direction: column; gap: var(--vd-2); }
.vd-label { font-size: 13px; font-weight: 500; color: var(--vd-fg-strong); }
.vd-hint  { font-size: 12px; color: var(--vd-fg-faint); }
.vd-input, .vd-textarea, .vd-select {
  font-family: var(--vd-font-body);
  font-size: 15px;
  color: var(--vd-fg-strong);
  background: var(--vd-bg-raised);
  border: 1px solid var(--vd-border-strong);
  border-radius: var(--vd-radius-md);
  padding: 12px 14px;
  width: 100%;
  transition: border-color var(--vd-dur-fast), box-shadow var(--vd-dur-fast);
}
.vd-textarea { resize: vertical; min-height: 96px; }
.vd-input::placeholder, .vd-textarea::placeholder { color: var(--vd-fg-faint); }
.vd-input:focus, .vd-textarea:focus, .vd-select:focus {
  outline: none;
  border-color: var(--vd-cyan);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--vd-cyan) 22%, transparent);
}
.vd-select { appearance: none; background-image:
  url("data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%2344505C' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 14px center; padding-right: 36px; }

/* Toggle / segmented control */
.vd-toggle {
  display: inline-flex; align-items: center; position: relative;
  background: var(--vd-bg-raised);
  border: 1px solid var(--vd-border);
  border-radius: var(--vd-radius-pill);
  padding: 3px;
}
.vd-toggle button {
  appearance: none; border: 0; background: transparent;
  padding: 7px 15px; cursor: pointer; position: relative; z-index: 1;
  font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--vd-fg-muted); border-radius: var(--vd-radius-pill);
  transition: color var(--vd-dur-fast);
}
.vd-toggle button[aria-pressed="true"] { color: var(--vd-white); }
.vd-toggle__pill {
  position: absolute; top: 3px; left: 3px; height: calc(100% - 6px);
  background: var(--vd-graphite); border-radius: var(--vd-radius-pill); z-index: 0;
  transition: transform var(--vd-dur-base) var(--vd-ease-signal), width var(--vd-dur-base) var(--vd-ease-signal);
}
[data-mode="signal"] .vd-toggle__pill { background: var(--vd-cyan); }
[data-mode="signal"] .vd-toggle button[aria-pressed="true"] { color: var(--vd-graphite); }

/* Switch */
.vd-switch { position: relative; display: inline-flex; width: 44px; height: 26px; flex-shrink: 0; cursor: pointer; }
.vd-switch input { position: absolute; opacity: 0; }
.vd-switch__track { position: absolute; inset: 0; background: var(--vd-border-strong); border-radius: var(--vd-radius-pill); transition: background var(--vd-dur-base); }
.vd-switch__thumb { position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; background: #fff; border-radius: 50%; box-shadow: var(--vd-shadow-sm); transition: transform var(--vd-dur-base) var(--vd-ease-signal); }
.vd-switch input:checked ~ .vd-switch__track { background: var(--vd-cyan); }
.vd-switch input:checked ~ .vd-switch__thumb { transform: translateX(18px); }

/* ===================================================================== */
/* TABLE / SCHEDULE                                                      */
/* ===================================================================== */
.vd-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.vd-table th {
  text-align: left; padding: 12px 16px;
  font-family: var(--vd-font-mono); font-size: 11px; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--vd-fg-faint); border-bottom: 1px solid var(--vd-border);
}
.vd-table td { padding: 14px 16px; border-bottom: 1px solid var(--vd-border); color: var(--vd-fg-muted); vertical-align: middle; }
.vd-table tbody tr { transition: background var(--vd-dur-fast); }
.vd-table tbody tr:hover { background: var(--vd-bg-elevated); }
.vd-table td:first-child, .vd-table th:first-child { font-family: var(--vd-font-mono); color: var(--vd-fg-strong); }
.vd-table strong { color: var(--vd-fg-strong); font-weight: 600; }

/* ===================================================================== */
/* TOP NAVIGATION                                                        */
/* ===================================================================== */
.vd-topnav {
  display: flex; align-items: center; justify-content: space-between; gap: var(--vd-5);
  padding: 16px clamp(20px, 4vw, 56px);
  background: color-mix(in srgb, var(--vd-bg) 86%, transparent);
  backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--vd-border);
}
.vd-topnav__brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--vd-fg-strong); }
.vd-topnav__mark { width: 24px; height: 27px; background: var(--vd-gradient-mark); -webkit-mask: var(--vd-mark-url); mask: var(--vd-mark-url); flex-shrink: 0; }
.vd-topnav__name { font-family: var(--vd-font-display); font-weight: 700; font-size: 17px; letter-spacing: 0.01em; }
.vd-topnav__links { display: flex; align-items: center; gap: var(--vd-5); }
.vd-topnav__links a { color: var(--vd-fg-muted); text-decoration: none; font-size: 14px; font-weight: 500; transition: color var(--vd-dur-fast); }
.vd-topnav__links a:hover { color: var(--vd-fg-strong); }

/* ===================================================================== */
/* LIVE PLAYER MODULE                                                    */
/* ===================================================================== */
.vd-player {
  border-radius: var(--vd-radius-lg);
  overflow: hidden;
  border: 1px solid var(--vd-border);
  background: var(--vd-graphite);
}
.vd-player__stage {
  position: relative;
  aspect-ratio: 16 / 9;
  background:
    radial-gradient(120% 90% at 80% 10%, rgba(37,197,205,0.18), transparent 60%),
    repeating-linear-gradient(135deg, rgba(232,239,242,0.05) 0 14px, transparent 14px 28px),
    #0B0F14;
  display: grid; place-items: center;
}
.vd-player__stage::after { content: "LIVE SIGNAL"; font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.16em; color: rgba(232,239,242,0.4); }
.vd-player__badge { position: absolute; top: 14px; left: 14px; }
.vd-player__bar {
  display: flex; align-items: center; gap: var(--vd-4);
  padding: 12px 16px; background: #131A22; color: var(--vd-mist);
}
.vd-player__time { font-family: var(--vd-font-mono); font-size: 12px; color: rgba(232,239,242,0.6); margin-left: auto; }
.vd-player__track { flex: 1; height: 4px; border-radius: var(--vd-radius-pill); background: rgba(232,239,242,0.16); overflow: hidden; }
.vd-player__fill { height: 100%; width: 38%; background: var(--vd-cyan); }

/* ===================================================================== */
/* OVERLAY LANGUAGE — route lines / node markers                         */
/* ===================================================================== */
.vd-node {
  display: inline-grid; place-items: center;
  width: 12px; height: 12px;
  background: var(--vd-cyan);
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}
.vd-route {
  height: 1px; flex: 1;
  background: repeating-linear-gradient(to right, var(--vd-cyan) 0 6px, transparent 6px 12px);
  opacity: 0.6;
}

/* ===================================================================== */
/* FOOTER                                                                */
/* ===================================================================== */
.vd-footer {
  background: var(--vd-graphite);
  color: var(--vd-mist);
  padding: clamp(48px, 7vw, 80px) 0 var(--vd-6);
}
.vd-footer a { color: rgba(232,239,242,0.7); text-decoration: none; font-size: 14px; transition: color var(--vd-dur-fast); }
.vd-footer a:hover { color: #fff; }
.vd-footer__grid { display: grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap: var(--vd-6); }
.vd-footer__col { display: flex; flex-direction: column; gap: var(--vd-3); }
.vd-footer__head { font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase; color: rgba(232,239,242,0.4); }
.vd-footer__mark { width: 28px; height: 32px; background: var(--vd-gradient-mark); -webkit-mask: var(--vd-mark-url); mask: var(--vd-mark-url); }
.vd-footer__bottom {
  margin-top: var(--vd-7); padding-top: var(--vd-5);
  border-top: 1px solid rgba(232,239,242,0.12);
  display: flex; justify-content: space-between; gap: var(--vd-4); flex-wrap: wrap;
  font-family: var(--vd-font-mono); font-size: 11px; letter-spacing: 0.06em; color: rgba(232,239,242,0.4);
}

/* ===================================================================== */
/* RESPONSIVE                                                            */
/* ===================================================================== */
@media (max-width: 900px) {
  .vd-footer__grid { grid-template-columns: 1fr 1fr; }
  .vd-topnav__links a:not(.vd-btn) { display: none; }
}
@media (max-width: 600px) {
  .vd-footer__grid { grid-template-columns: 1fr; }
}