/* =====================================================
   CYBERGLOW UI — Single Theme Edition (No Theme Switch)
===================================================== */

:root {
  --bg-main: #020617;
  --bg-card: rgba(10,15,30,0.55);
  --txt-main: #e5e7eb;
  --txt-secondary: #9ca3af;
  --glow-1: #4f46e5;
  --glow-2: #06b6d4;
  --glow-soft: #7c3aedaa;
}

/* =====================================================
   BODY
===================================================== */

body {
  margin: 0;
  padding: 0;
  background: var(--bg-main);
  color: var(--txt-main);
  font-family: system-ui, sans-serif;
  overflow-x: hidden;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at center, var(--glow-1), transparent 70%);
  filter: blur(40px);
  opacity: .22;
  pointer-events: none;
  z-index: -1;
}

/* =====================================================
   LAYOUT
===================================================== */

.app {
  margin: 32px auto;
  padding: 20px;
  max-width: 1000px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* =====================================================
   HEADER
===================================================== */

h1 {
  margin: 0 0 4px 0;
  font-size: 2rem;
  text-shadow: 0 0 12px var(--glow-1), 0 0 20px var(--glow-2);
}

.subtitle {
  margin-bottom: 20px;
  font-size: .9rem;
  color: var(--txt-secondary);
}

/* =====================================================
   TABS
===================================================== */

.tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.tab {
  padding: 9px 16px;
  border-radius: 999px;
  background: rgba(15,23,42,.65);
  border: 1px solid rgba(148,163,184,.25);
  color: var(--txt-secondary);
  cursor: pointer;
  font-size: .85rem;
  backdrop-filter: blur(6px);
  transition: 0.25s ease;
}

.tab:hover {
  border-color: var(--glow-1);
  box-shadow: 0 0 12px var(--glow-1);
  color: #fff;
}

.tab.active {
  background: linear-gradient(135deg, var(--glow-1), var(--glow-2));
  color: #fff;
  box-shadow: 0 0 22px var(--glow-1), 0 0 26px var(--glow-2);
}

/* =====================================================
   CARD PANELS
===================================================== */

.card {
  background: var(--bg-card);
  border-radius: 14px;
  padding: 14px 16px;
  border: 1px solid var(--glow-1);
  box-shadow: 0 0 22px var(--glow-soft);
  backdrop-filter: blur(12px);
  max-width: 720px;
  width: 100%;
  margin: 0 auto 20px;
}

.card h2 {
  margin-bottom: 14px;
  padding-bottom: 6px;
  font-size: 1.25rem;
  border-bottom: 1px solid rgba(148,163,184,0.18);
  text-shadow: 0 0 10px var(--glow-1);
}

.panel { display: none; }
.panel.active { display: block; }

/* =====================================================
   FORM ELEMENTS
===================================================== */

.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 13px;
}

.field span {
  font-size: .82rem;
  color: var(--txt-secondary);
}

input,
select {
  padding: 9px 11px;
  border-radius: 9px;
  background: rgba(15,23,42,.75);
  border: 1px solid rgba(148,163,184,.25);
  color: var(--txt-main);
  transition: 0.25s ease;
}

input:hover,
select:hover {
  border-color: rgba(148,163,184,.55);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--glow-1);
  box-shadow: 0 0 12px var(--glow-1);
}

/* =====================================================
   CUSTOM FILE INPUT (TAŞMA SORUNU %100 FIX)
===================================================== */

.file-input-wrapper {
  position: relative;
  width: 100%;
  display: block;
}

.file-input-wrapper input[type="file"] {
  opacity: 0;
  position: absolute;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.file-input-button {
  width: 100%;
  box-sizing: border-box;   /* ← TAŞMA FIX */
  padding: 10px 14px;
  font-size: .85rem;
  background: #1e1e1e;
  border: 1px solid #444;
  color: white;
  border-radius: 8px;
  display: inline-block;
  cursor: pointer;
  transition: 0.25s ease;
}

.file-input-button:hover {
  background: #000;
}

.file-name {
  margin-top: 5px;
  font-size: .75rem;
  color: #9ca3af;
}

/* =====================================================
   BUTTONS
===================================================== */

button {
  padding: 10px 22px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(135deg, var(--glow-1), var(--glow-2));
  font-weight: 600;
  transition: 0.25s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 0 22px var(--glow-1);
}

button:active {
  transform: scale(.97);
}

/* =====================================================
   STATUS LABELS
===================================================== */

.status {
  margin-top: 8px;
  font-size: .82rem;
}

.status.ok { color: #4ade80; }
.status.error { color: #f87171; }

/* =====================================================
   FOOTER
===================================================== */

#siteFooter {
  margin-top: 50px;
  text-align: center;
  font-size: .8rem;
  color: #9ca3af;
}

#siteFooter a {
  color: #a5b4fc;
  text-decoration: none;
}

#siteFooter a:hover {
  text-decoration: underline;
}

/* =====================================================
   RESPONSIVE
===================================================== */

@media (max-width: 700px) {
  .card { max-width: 92%; }
}

@media (max-width: 480px) {
  .tabs { flex-wrap: wrap; }
  h1 { font-size: 1.6rem; }
}