/* ============================================================
   InstaViral | Design System — Purple Edition
   Primary: #7B4ED4  |  Soft: #EDE6FA
   ============================================================ */

/* ── Design Tokens ── */
:root {
  /* Accent — Purple */
  --accent:       #8B5CF6;
  --accent-dark:  #7C3AED;
  --accent-soft:  rgba(139, 92, 246, 0.12);
  --accent-glow:  rgba(139, 92, 246, 0.20);
  --accent-border: rgba(139, 92, 246, 0.30);

  /* Surfaces — Light Mode */
  --bg-main:    #F7F5FF;
  --bg-card:    #FFFFFF;
  --bg-hover:   #F3F0FD;
  --border-base:#E8E2F8;
  --border-sub: #F0ECF9;

  /* Text — Light Mode */
  --text-main:  #1A1025;
  --text-muted: #7A6F8A;
  --text-dim:   #B0A8C0;

  /* Sidebar */
  --sidebar-bg: #FFFFFF;
  --sidebar-link-active-bg: rgba(123, 78, 212, 0.08);
  --sidebar-link-active-color: #7B4ED4;
  --sidebar-link-active-border: #7B4ED4;

  /* Header */
  --header-bg:     rgba(247,245,255,0.92);
  --header-border: rgba(123,78,212,0.10);

  /* Shadows */
  --shadow-sm: 0 1px 4px rgba(100,70,180,0.07);
  --shadow-md: 0 4px 20px rgba(100,70,180,0.10);
  --shadow-lg: 0 12px 40px rgba(100,70,180,0.14);

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-xl: 20px;

  /* Easing */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Transition */
  --transition: 150ms ease;
}

/* ── Dark Mode ── */
.dark-mode {
  --bg-main:    #0D0A14;
  --bg-card:    #13101E;
  --bg-hover:   #1A1528;
  --border-base:#2A2240;
  --border-sub: #1E1830;

  --text-main:  #F2EFFF;
  --text-muted: #8B7FAA;
  --text-dim:   #4A4060;

  --sidebar-bg: #13101E;
  --sidebar-link-active-bg: rgba(123,78,212,0.15);

  --header-bg:     rgba(13,10,20,0.88);
  --header-border: rgba(123,78,212,0.15);

  --shadow-sm: 0 1px 4px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.35);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.45);

  --accent-soft:   rgba(123,78,212,0.12);
  --accent-border: rgba(123,78,212,0.25);
}

/* ── Global Reset ── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-main);
  color: var(--text-main);
  transition: background 250ms ease, color 250ms ease;
  -webkit-font-smoothing: antialiased;
}

/* Scrollbar */
::-webkit-scrollbar       { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-base); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }
.custom-scrollbar { scrollbar-width: thin; scrollbar-color: var(--border-base) transparent; }

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes shimmer {
  from { background-position: -200% 0; }
  to   { background-position: 200% 0; }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 0 0 var(--accent-glow); }
  50%       { box-shadow: 0 0 0 8px transparent; }
}

/* Scroll-Reveal */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 600ms var(--ease-out), transform 600ms var(--ease-out);
}
.reveal.visible { opacity: 1; transform: none; }
.reveal-delay-1 { transition-delay: 90ms; }
.reveal-delay-2 { transition-delay: 180ms; }
.reveal-delay-3 { transition-delay: 270ms; }

/* ── Animation Classes ── */
.animate-fade-in  { animation: fadeIn 300ms ease both; }
.animate-fade-up  { animation: fadeUp 500ms var(--ease-out) both; }

/* ── Buttons ── */
.btn-accent {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent); color: #FFFFFF;
  font-weight: 800; font-size: 11px;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 12px 24px; border-radius: var(--radius-md);
  border: none; cursor: pointer; text-decoration: none;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 16px var(--accent-glow);
}
.btn-accent:hover   { background: var(--accent-dark); transform: translateY(-1px); box-shadow: 0 8px 24px var(--accent-glow); color: #FFFFFF; }
.btn-accent:active  { transform: scale(0.98); }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent; color: var(--text-muted);
  font-weight: 700; font-size: 11px;
  letter-spacing: 0.08em; text-transform: uppercase;
  padding: 11px 20px; border-radius: var(--radius-md);
  border: 1px solid var(--border-base); cursor: pointer;
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition), background var(--transition);
}
.btn-ghost:hover { color: var(--text-main); border-color: var(--accent); background: var(--accent-soft); }

/* ── Cards ── */
.card-base {
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.card-lift {
  transition: transform 200ms var(--ease-out), box-shadow 200ms var(--ease-out), border-color 200ms ease;
}
.card-lift:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--accent-border);
}

/* ── KPI Card ── */
.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex; flex-direction: column; gap: 6px;
  transition: border-color 200ms ease;
}
.kpi-card:hover { border-color: var(--accent-border); }
.kpi-value { font-size: 1.6rem; font-weight: 900; color: var(--text-main); line-height: 1; }
.kpi-label { font-size: 10px; font-weight: 700; color: var(--text-muted); letter-spacing: 0.12em; text-transform: uppercase; }

/* ── Sidebar Links ── */
.sidebar-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-radius: var(--radius-md);
  font-size: 12px; font-weight: 700; color: var(--text-muted);
  text-decoration: none; border-left: 2px solid transparent;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.sidebar-link:hover           { background: var(--bg-hover); color: var(--text-main); }
.sidebar-link.active          { background: var(--sidebar-link-active-bg); color: var(--accent); border-left-color: var(--accent); }

/* ── Badges ── */
.badge-accent {
  font-size: 9px; font-weight: 900; letter-spacing: 0.15em; text-transform: uppercase;
  background: var(--accent-soft); color: var(--accent);
  border: 1px solid var(--accent-border);
  padding: 3px 10px; border-radius: 99px;
}
.badge-muted {
  font-size: 9px; font-weight: 900; letter-spacing: 0.12em; text-transform: uppercase;
  background: var(--bg-hover); color: var(--text-muted);
  border: 1px solid var(--border-base);
  padding: 3px 10px; border-radius: 99px;
}

/* ── Inputs ── */
.input-base {
  width: 100%; background: var(--bg-hover);
  border: 1px solid var(--border-base); border-radius: var(--radius-md);
  color: var(--text-main); font-family: inherit; font-size: 13px; font-weight: 500;
  padding: 12px 16px; outline: none;
  transition: border-color 150ms ease, box-shadow 150ms ease;
}
.input-base::placeholder { color: var(--text-dim); }
.input-base:focus        { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }

/* ── Project Cards (Dashboard) ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-lg);
  overflow: hidden; position: relative;
  cursor: pointer;
  transition: border-color 200ms ease, transform 200ms var(--ease-out), box-shadow 200ms ease;
}
.project-card:hover { transform: translateY(-4px); border-color: var(--accent-border); box-shadow: var(--shadow-md); }

.project-card-overlay {
  position: absolute; inset: 0;
  background: rgba(123,78,212,0.85);
  display: flex; align-items: center; justify-content: center;
  opacity: 0;
  transform: translateY(100%);
  transition: opacity 250ms ease, transform 250ms var(--ease-out);
}
.project-card:hover .project-card-overlay { opacity: 1; transform: translateY(0); }

/* ── Setting Card ── */
.setting-card {
  background: var(--bg-card);
  border: 1px solid var(--border-base);
  border-radius: var(--radius-lg);
  padding: 32px;
}

/* ── Tab Button ── */
.tab-btn { transition: background 150ms ease, color 150ms ease; }
.tab-btn.active { background: var(--accent); color: #FFFFFF; border-radius: var(--radius-md); }

/* ── Toggle Switch ── */
.toggle-track {
  width: 36px; height: 20px;
  background: var(--border-base); border-radius: 99px;
  position: relative; cursor: pointer;
  transition: background 200ms ease;
}
.toggle-track.on { background: var(--accent); }
.toggle-thumb {
  width: 14px; height: 14px;
  background: #fff; border-radius: 50%;
  position: absolute; top: 3px; left: 3px;
  transition: transform 200ms ease;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
}
.toggle-track.on .toggle-thumb { transform: translateX(16px); }

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