/* ─── Reset & Base ─────────────────────────────────────────────── */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0f;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-hover: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(139, 92, 246, 0.5);
  --text: #e4e4e7;
  --text-secondary: #71717a;
  --text-muted: #52525b;
  --accent: #8b5cf6;
  --accent-hover: #a78bfa;
  --accent-glow: rgba(139, 92, 246, 0.25);
  --success: #34d399;
  --success-bg: rgba(52, 211, 153, 0.1);
  --error: #f87171;
  --error-bg: rgba(248, 113, 113, 0.1);
  --radius: 16px;
  --radius-sm: 10px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 60px 20px;
  position: relative;
  overflow-x: hidden;
}

/* ─── Background Effects ──────────────────────────────────────── */
.bg-glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}

.bg-glow-1 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #8b5cf6 0%, transparent 70%);
  top: -150px;
  right: -100px;
  animation: float 20s ease-in-out infinite;
}

.bg-glow-2 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #06b6d4 0%, transparent 70%);
  bottom: -100px;
  left: -100px;
  animation: float 25s ease-in-out infinite reverse;
}

.bg-glow-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, #ec4899 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.15;
  animation: float 15s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0) translateX(0);
  }
  33% {
    transform: translateY(-30px) translateX(20px);
  }
  66% {
    transform: translateY(20px) translateX(-15px);
  }
}

/* ─── Container ───────────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: 580px;
  position: relative;
  z-index: 1;
}

/* ─── Header ──────────────────────────────────────────────────── */
.header {
  text-align: center;
  margin-bottom: 32px;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 8px;
}

.logo-icon {
  width: 32px;
  height: 32px;
  color: var(--accent);
  filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  background: linear-gradient(135deg, #e4e4e7 0%, #a1a1aa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  font-weight: 400;
}

/* ─── Cards ───────────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  animation: cardIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hidden {
  display: none !important;
}

/* ─── Input ───────────────────────────────────────────────────── */
.input-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.input-group {
  display: flex;
  gap: 10px;
}

.url-input {
  flex: 1;
  padding: 14px 16px;
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  outline: none;
  transition: all 0.25s ease;
}

.url-input::placeholder {
  color: var(--text-muted);
}

.url-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
  background: rgba(0, 0, 0, 0.45);
}

.input-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 12px;
}

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
  color: #fff;
  box-shadow: 0 4px 16px var(--accent-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--accent-hover) 0%, #8b5cf6 100%);
  box-shadow: 0 6px 24px var(--accent-glow);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-icon {
  width: 18px;
  height: 18px;
  transition: transform 0.25s ease;
}

.btn-primary:hover .btn-icon {
  transform: translateX(3px);
}

.btn-download {
  width: 100%;
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
  color: #fff;
  padding: 16px;
  font-size: 1rem;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.25);
}

.btn-download:hover {
  box-shadow: 0 6px 24px rgba(16, 185, 129, 0.35);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  width: 100%;
  margin-top: 12px;
}

.btn-ghost:hover {
  background: var(--surface-hover);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.15);
}

/* ─── Progress ────────────────────────────────────────────────── */
.progress-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 12px;
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.status-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text);
}

.progress-bar-container {
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 100px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #c084fc);
  border-radius: 100px;
  transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
}

.progress-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.3) 50%,
    transparent 100%
  );
  animation: shimmer 1.5s ease-in-out infinite;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

.progress-info {
  display: flex;
  justify-content: space-between;
  margin-top: 10px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ─── Result ──────────────────────────────────────────────────── */
.result-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.result-icon {
  width: 56px;
  height: 56px;
  color: var(--success);
  filter: drop-shadow(0 0 12px rgba(52, 211, 153, 0.3));
  animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes popIn {
  0% {
    opacity: 0;
    transform: scale(0.5);
  }
  60% {
    transform: scale(1.1);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

.result-title {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 16px;
}

.result-meta {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
  padding: 6px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

.meta-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

/* ─── Error ───────────────────────────────────────────────────── */
.error-icon-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 16px;
}

.error-icon {
  width: 56px;
  height: 56px;
  color: var(--error);
  filter: drop-shadow(0 0 12px rgba(248, 113, 113, 0.3));
  animation: popIn 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.error-title {
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.error-message {
  text-align: center;
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.5;
}

/* ─── Responsive ──────────────────────────────────────────────── */
@media (max-width: 600px) {
  body {
    padding: 32px 16px;
  }

  .logo h1 {
    font-size: 1.4rem;
  }

  .input-group {
    flex-direction: column;
  }

  .btn-primary {
    width: 100%;
  }

  .card {
    padding: 22px;
  }
}