/* ===== RESET & BASE ===== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0a0e17;
  --bg-secondary: #111827;
  --bg-card: #1a2332;
  --bg-card-hover: #1f2b3d;
  --bg-input: #0f1724;
  --border: #2a3546;
  --border-focus: #3b82f6;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --accent: #3b82f6;
  --accent-hover: #2563eb;
  --accent-glow: rgba(59, 130, 246, 0.15);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --error: #ef4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --transition: 0.2s ease;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

html { font-size: 16px; }

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ===== LOGIN PAGE ===== */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(16, 185, 129, 0.05) 0%, transparent 50%),
    var(--bg-primary);
}

.login-container {
  width: 100%;
  max-width: 420px;
  padding: 2rem;
}

.login-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
  animation: fadeInUp 0.5s ease;
}

.login-header {
  text-align: center;
  margin-bottom: 2rem;
}

.logo-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius);
  color: var(--accent);
}

.logo-icon svg {
  width: 28px;
  height: 28px;
}

.logo-icon.small {
  width: 36px;
  height: 36px;
  margin: 0;
  border-radius: var(--radius-sm);
}

.logo-icon.small svg {
  width: 18px;
  height: 18px;
}

.login-header h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.footer-text {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 2rem;
}

/* ===== FORMS ===== */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input[type="text"],
.form-group input[type="password"] {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font);
  font-size: 0.9375rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
}

.form-group input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-row {
  display: flex;
  gap: 1rem;
}

.flex-1 { flex: 1; }

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

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

.btn-primary:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--text-muted);
  background: rgba(255, 255, 255, 0.03);
}

.btn-sm {
  padding: 0.4rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-full {
  width: 100%;
}

.btn-text { display: inline; }
.btn-loader { display: none; }

.btn.loading .btn-text { display: none; }
.btn.loading .btn-loader { display: inline-flex; align-items: center; gap: 0.5rem; }

/* ===== SPINNER ===== */
.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

/* ===== MESSAGES ===== */
.error-message {
  background: var(--error-bg);
  border: 1px solid rgba(239, 68, 68, 0.2);
  color: var(--error);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  animation: fadeIn 0.3s ease;
}

.success-message {
  background: var(--success-bg);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--success);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.8125rem;
  margin-bottom: 1rem;
  animation: fadeIn 0.3s ease;
}

/* ===== TOPBAR ===== */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(12px);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.topbar-title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.user-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.3rem 0.75rem;
  background: var(--accent-glow);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
}

/* ===== DASHBOARD ===== */
.dashboard-content {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* ===== CARD ===== */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  box-shadow: var(--shadow);
  animation: fadeInUp 0.4s ease;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.card-header h2 {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.card-description {
  color: var(--text-muted);
  font-size: 0.8125rem;
  margin-top: 0.25rem;
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* ===== FILE DROP ZONE ===== */
.file-drop-zone {
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition);
  position: relative;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
  border-color: var(--accent);
  background: var(--accent-glow);
}

.drop-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.drop-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.drop-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.file-selected {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--bg-input);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.file-name {
  flex: 1;
  font-weight: 500;
  font-size: 0.875rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
  flex-shrink: 0;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 1.25rem;
  cursor: pointer;
  padding: 0 0.25rem;
  line-height: 1;
  transition: color var(--transition);
}

.btn-remove:hover {
  color: var(--error);
}

/* ===== PROGRESS BAR ===== */
.progress-container {
  margin-bottom: 1rem;
}

.progress-bar {
  height: 8px;
  background: var(--bg-input);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), #60a5fa);
  border-radius: 999px;
  transition: width 0.3s ease;
}

.progress-info {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===== TABLE ===== */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.history-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.history-table thead {
  background: var(--bg-input);
}

.history-table th {
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.history-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(42, 53, 70, 0.5);
  color: var(--text-primary);
  white-space: nowrap;
}

.history-table tbody tr {
  transition: background var(--transition);
}

.history-table tbody tr:hover {
  background: var(--bg-card-hover);
}

.history-table .empty-row td {
  text-align: center;
  color: var(--text-muted);
  padding: 2rem;
}

/* Status badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.625rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-success {
  background: var(--success-bg);
  color: var(--success);
  border: 1px solid rgba(16, 185, 129, 0.2);
}

.badge-error {
  background: var(--error-bg);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 640px) {
  .topbar { padding: 0.75rem 1rem; }
  .dashboard-content { padding: 0 1rem; margin: 1rem auto; }
  .card { padding: 1.25rem; }
  .form-row { flex-direction: column; }
  .history-table { font-size: 0.75rem; }
  .history-table th, .history-table td { padding: 0.5rem 0.75rem; }
}