/* =============================================
   dcprivate — shared styles (login + portal)
   Based on the David Crnko portfolio theme.
   Dark (default) & light themes, responsive.
============================================= */

:root {
  --bg-dark:       #09090f;
  --text-primary:  #f0f0f8;
  --text-secondary:#9898b8;
  --text-muted:    #55556a;
  --accent:        #7c6af7;
  --accent-hover:  #6b5af0;
  --accent-glow:   rgba(124,106,247,0.18);
  --border:        rgba(255,255,255,0.08);
  --border-hover:  rgba(255,255,255,0.18);
  --card-bg:       rgba(255,255,255,0.04);
  --surface:       rgba(15,15,26,0.95);
  --nav-bg:        rgba(9,9,15,0.85);
  --shadow-lg:     0 12px 48px rgba(0,0,0,0.5);
  --input-bg:      rgba(255,255,255,0.04);
  --input-focus:   rgba(124,106,247,0.25);
  --error:         #f87171;
  --error-bg:      rgba(248,113,113,0.08);

  --font-body:  'Montserrat', sans-serif;
  --font-mono:  'Space Mono', monospace;
  --radius:     12px;
  --radius-lg:  20px;
  --transition: 0.28s cubic-bezier(0.4,0,0.2,1);
  --nav-h:      62px;
  --side-pad:   clamp(1rem, 5vw, 2.5rem);
}

body.light-theme {
  --bg-dark:       #f0f2ff;
  --text-primary:  #0f0f1e;
  --text-secondary:#3a3a60;
  --text-muted:    #7777a0;
  --accent:        #5b48e8;
  --accent-hover:  #4a37d6;
  --accent-glow:   rgba(91,72,232,0.14);
  --border:        rgba(0,0,0,0.08);
  --border-hover:  rgba(0,0,0,0.18);
  --card-bg:       rgba(255,255,255,0.7);
  --surface:       rgba(255,255,255,0.85);
  --nav-bg:        rgba(240,242,255,0.9);
  --shadow-lg:     0 12px 48px rgba(91,72,232,0.16);
  --input-bg:      rgba(255,255,255,0.8);
  --input-focus:   rgba(91,72,232,0.2);
  --error:         #dc2626;
  --error-bg:      rgba(220,38,38,0.06);
}

/* ── Reset ─────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
a { color: inherit; text-decoration: none; }

body {
  font-family: var(--font-body);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.4s ease, color 0.4s ease;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(ellipse 70% 50% at 15% 10%, rgba(124,106,247,0.12) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 80%, rgba(124,106,247,0.08) 0%, transparent 50%),
    var(--bg-dark);
  pointer-events: none;
}
body.light-theme::before {
  background:
    radial-gradient(ellipse 70% 50% at 15% 10%, rgba(91,72,232,0.09) 0%, transparent 55%),
    radial-gradient(ellipse 50% 40% at 85% 80%, rgba(91,72,232,0.06) 0%, transparent 50%),
    var(--bg-dark);
}

/* ── Top bar ───────────────────────────── */
.topbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 var(--side-pad);
  background: var(--nav-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}
.brand {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.brand .accent { color: var(--accent); }
.topbar-actions { display: flex; align-items: center; gap: 0.75rem; }

/* ── Theme toggle ──────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 5px 10px;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); background: var(--accent-glow); }
.toggle-icon { font-size: 0.85rem; line-height: 1; }
#toggle-sun  { color: #fbbf24; }
#toggle-moon { color: #a5b4fc; }
.toggle-knob {
  width: 28px; height: 16px;
  background: var(--border);
  border: 1px solid var(--border-hover);
  border-radius: 100px;
  position: relative;
  flex-shrink: 0;
}
.toggle-knob::after {
  content: '';
  position: absolute;
  top: 2px; left: 2px;
  width: 10px; height: 10px;
  background: var(--accent);
  border-radius: 50%;
  transition: transform var(--transition);
}
body.light-theme .toggle-knob::after { transform: translateX(12px); }

/* ── Layout ────────────────────────────── */
.page {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-h) + 2rem) var(--side-pad) 2rem;
}

.card {
  width: min(420px, 100%);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: clamp(1.5rem, 5vw, 2.5rem);
}
.card--wide { width: min(720px, 100%); }

.section-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}
.card h1 {
  font-size: clamp(1.4rem, 4vw, 1.8rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.4rem;
}
.card-sub {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.75rem;
}
.card-note {
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  text-align: center;
}

/* ── Form ──────────────────────────────── */
.form { display: flex; flex-direction: column; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
label {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-secondary);
}
input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.9rem;
  padding: 0.75rem 1rem;
  transition: all var(--transition);
}
input::placeholder { color: var(--text-muted); }
input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--input-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.error-message {
  font-size: 0.8rem;
  color: var(--error);
  background: var(--error-bg);
  border: 1px solid var(--error);
  border-radius: 8px;
  padding: 0.6rem 0.8rem;
}
.error-message[hidden] { display: none; }

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  width: 100%;
  margin-top: 0.5rem;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 8px;
  padding: 0.85rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  box-shadow: 0 4px 14px rgba(124,106,247,0.3);
  transition: all var(--transition);
}
.btn-submit:hover:not(:disabled) {
  background: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(124,106,247,0.4);
}
.btn-submit:disabled { opacity: 0.7; cursor: wait; }
.btn-submit.loading::before {
  content: '';
  width: 14px; height: 14px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-primary);
  padding: 0.45rem 1rem;
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: all var(--transition);
}
.btn-outline:hover {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}

/* ── Footer ────────────────────────────── */
footer {
  text-align: center;
  padding: 1.5rem var(--side-pad);
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  border-top: 1px solid var(--border);
}

/* ── Animations ────────────────────────── */
.fade-up {
  opacity: 0;
  transform: translateY(22px);
  animation: fadeUp 0.7s ease forwards;
}
@keyframes fadeUp { to { opacity: 1; transform: translateY(0); } }
@keyframes spin { to { transform: rotate(360deg); } }

@media (prefers-reduced-motion: reduce) {
  .fade-up { animation: none; opacity: 1; transform: none; }
  * { transition: none !important; }
}

@media (max-width: 480px) {
  :root { --nav-h: 54px; }
  .brand { font-size: 0.95rem; }
}