/* ============================================================
   SMTP Tester — Premium Dark Theme
   ============================================================ */

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

:root {
  /* Core palette from tyk.no */
  --bg-primary: #0b0e14;
  --bg-secondary: #0f121a;
  --bg-card: rgba(18, 22, 32, 0.7);
  --bg-card-hover: rgba(24, 30, 42, 0.8);
  --bg-input: rgba(7, 10, 15, 0.8);
  --bg-terminal: #07090e;

  /* Borders */
  --border-subtle: rgba(148, 163, 184, 0.12);
  --border-glow: rgba(128, 237, 153, 0.25);
  --border-input: rgba(148, 163, 184, 0.18);
  --border-input-focus: rgba(128, 237, 153, 0.6);

  /* Text */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-link: #80ed99;

  /* Accent gradient */
  --gradient-accent: linear-gradient(135deg, #80ed99 0%, #57cc99 100%);
  --gradient-header: linear-gradient(135deg, #0b0e14 0%, #151a24 100%);
  --gradient-btn: linear-gradient(135deg, #80ed99 0%, #57cc99 100%);
  --gradient-btn-hover: linear-gradient(135deg, #97f2ac 0%, #6ce0ae 100%);

  /* Log colors - Harmonized with mint theme */
  --color-sent: #80ed99;
  --color-received: #38bdf8;
  --color-info: #fbbf24;
  --color-error: #f87171;
  --color-tls: #c084fc;
  --color-complete: #80ed99;

  /* Effects */
  --shadow-card: 0 4px 30px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(128, 237, 153, 0.1);
  --shadow-btn: 0 4px 14px rgba(128, 237, 153, 0.3);
  --shadow-btn-hover: 0 6px 20px rgba(128, 237, 153, 0.45);

  /* Spacing */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Typography */
  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Cascadia Code', 'Fira Code', monospace;
}

html {
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-ui);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  background: rgba(99, 115, 155, 0.3);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: rgba(99, 115, 155, 0.5); }

/* --- Header --- */
#app-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem 1.75rem;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
}

.header-content {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-icon {
  width: 42px;
  height: 42px;
  background: transparent;
  border: 2px solid var(--text-link);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-link);
  flex-shrink: 0;
}

.header-icon svg {
  width: 24px;
  height: 24px;
}

#app-header h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.header-subtitle {
  font-size: 0.73rem;
  color: var(--text-muted);
  font-weight: 400;
  letter-spacing: 0.02em;
}

.header-badge {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.35rem 0.85rem;
  background: rgba(128, 237, 153, 0.06);
  border: 1px solid rgba(128, 237, 153, 0.15);
  border-radius: 6px;
  color: var(--text-link);
  opacity: 0.8;
}

/* --- Main Layout --- */
#app-main {
  flex: 1;
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.25rem;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
}

/* --- Glass Card --- */
.glass-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

/* --- Config Panel --- */
#config-panel {
  height: fit-content;
  position: sticky;
  top: 80px;
}

.panel-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.panel-header h2 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.panel-icon {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}

/* --- Form --- */
#smtp-form {
  padding: 1rem 1.25rem 1.25rem;
}

.form-section {
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.form-section:last-of-type {
  border-bottom: none;
  margin-bottom: 0.5rem;
  padding-bottom: 0;
}

.form-section-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.optional-badge {
  font-size: 0.65rem;
  font-weight: 400;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.5rem;
  background: rgba(99, 115, 155, 0.1);
  border-radius: 10px;
}

.form-group {
  margin-bottom: 0.75rem;
}

.form-group label {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="number"],
.form-group input[type="password"] {
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}

.form-group input:focus {
  border-color: var(--border-input-focus);
  box-shadow: 0 0 0 3px rgba(99, 140, 255, 0.1);
}

.form-group input::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}

/* Port row */
.form-row {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.form-group-port {
  flex: 1;
  margin-bottom: 0;
}

.port-presets {
  display: flex;
  gap: 0.3rem;
  padding-bottom: 1px;
}

.preset-btn {
  padding: 0.58rem 0.7rem;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.2s;
}

.preset-btn:hover {
  border-color: var(--border-glow);
  color: var(--text-primary);
}

.preset-btn.active {
  background: rgba(128, 237, 153, 0.1);
  border-color: rgba(128, 237, 153, 0.4);
  color: var(--text-link);
}

/* Security radio cards */
.security-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.4rem;
}

.radio-card {
  cursor: pointer;
}

.radio-card input {
  display: none;
}

.radio-card-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
  padding: 0.6rem 0.4rem;
  background: var(--bg-input);
  border: 1px solid var(--border-input);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
  text-align: center;
}

.radio-card input:checked + .radio-card-inner {
  background: rgba(128, 237, 153, 0.08);
  border-color: rgba(128, 237, 153, 0.4);
  box-shadow: 0 0 12px rgba(128, 237, 153, 0.05);
}

.radio-card:hover .radio-card-inner {
  border-color: var(--border-glow);
}

.radio-card-icon {
  font-size: 1.1rem;
}

.radio-card-label {
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
}

.radio-card input:checked + .radio-card-inner .radio-card-label {
  color: var(--text-primary);
}

/* Toggle switch */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 20px;
  cursor: pointer;
}

.toggle-switch input { display: none; }

.toggle-slider {
  position: absolute;
  inset: 0;
  background: rgba(99, 115, 155, 0.25);
  border-radius: 20px;
  transition: background 0.3s;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  background: var(--text-secondary);
  border-radius: 50%;
  transition: transform 0.3s, background 0.3s;
}

.toggle-switch input:checked + .toggle-slider {
  background: rgba(128, 237, 153, 0.3);
}

.toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(16px);
  background: var(--text-link);
}

/* Auth fields */
.auth-fields {
  transition: all 0.3s ease;
}

.auth-fields.hidden {
  display: none;
}

/* Checkbox row */
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  font-size: 0.82rem;
  color: var(--text-secondary);
}

.checkbox-row input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: #6c63ff;
  cursor: pointer;
}

.send-test-wrapper {
  margin-top: 0.5rem;
  padding: 0.6rem 0.75rem;
  background: rgba(128, 237, 153, 0.04);
  border: 1px solid rgba(128, 237, 153, 0.1);
  border-radius: var(--radius-sm);
}

.send-test-wrapper.hidden {
  display: none;
}

.form-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 0.3rem;
  padding-left: 1.6rem;
}

/* Warning banner */
.warning-banner {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  padding: 0.75rem 1rem;
  background: rgba(255, 82, 82, 0.08);
  border: 1px solid rgba(255, 82, 82, 0.2);
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  animation: fadeIn 0.3s ease;
}

.warning-banner.hidden {
  display: none;
}

.warning-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  color: var(--color-error);
  margin-top: 1px;
}

.warning-banner strong {
  font-size: 0.82rem;
  color: var(--color-error);
}

.warning-banner p {
  font-size: 0.73rem;
  color: var(--text-secondary);
  margin-top: 0.15rem;
}

/* Submit button */
.form-actions {
  padding-top: 0.25rem;
}

.btn-primary {
  width: 100%;
  padding: 0.75rem 1.5rem;
  background: var(--gradient-btn);
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-family: var(--font-ui);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-btn);
  transition: all 0.25s;
  position: relative;
  overflow: hidden;
}

.btn-primary:hover:not(:disabled) {
  background: var(--gradient-btn-hover);
  box-shadow: var(--shadow-btn-hover);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary.running {
  background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
  box-shadow: 0 4px 16px rgba(231, 76, 60, 0.3);
}

.btn-primary.running:hover {
  box-shadow: 0 6px 24px rgba(231, 76, 60, 0.45);
}

.btn-icon {
  width: 16px;
  height: 16px;
}

/* --- Terminal Panel --- */
#terminal-panel {
  display: flex;
  flex-direction: column;
  background: var(--bg-terminal);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  min-height: 500px;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: rgba(15, 18, 26, 0.8);
  border-bottom: 1px solid var(--border-subtle);
}

.terminal-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #ff5f56; }
.dot-yellow { background: #ffbd2e; }
.dot-green { background: #27c93f; }

.terminal-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Status indicator */
.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-muted);
  padding-right: 0.5rem;
  border-right: 1px solid var(--border-subtle);
  margin-right: 0.25rem;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-muted);
  transition: background 0.3s;
}

.status-indicator.running .status-dot {
  background: var(--color-info);
  animation: pulse 1.2s infinite;
}

.status-indicator.complete .status-dot {
  background: var(--color-complete);
}

.status-indicator.error .status-dot {
  background: var(--color-error);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* Icon buttons */
.btn-icon-action {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.2s;
}

.btn-icon-action:hover:not(:disabled) {
  background: rgba(148, 163, 184, 0.08);
  border-color: var(--border-subtle);
  color: var(--text-primary);
}

.btn-icon-action:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.btn-icon-action svg {
  width: 15px;
  height: 15px;
}

/* Export dropdown */
.export-dropdown {
  position: relative;
}

.export-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  z-index: 50;
  min-width: 180px;
  animation: fadeIn 0.15s ease;
}

.export-menu.hidden {
  display: none;
}

.export-option {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  width: 100%;
  padding: 0.6rem 0.85rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  transition: background 0.15s;
  font-family: var(--font-ui);
}

.export-option:hover {
  background: rgba(128, 237, 153, 0.08);
  color: var(--text-link);
}

.export-option + .export-option {
  border-top: 1px solid var(--border-subtle);
}

.export-format {
  font-size: 0.82rem;
  font-weight: 600;
}

.export-desc {
  font-size: 0.68rem;
  color: var(--text-muted);
}

/* Terminal body */
.terminal-body {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.7;
}

.terminal-log {
  display: flex;
  flex-direction: column;
  gap: 0;
}

/* Welcome message */
.terminal-welcome {
  color: var(--text-muted);
  padding: 2rem 0;
  text-align: center;
}

.terminal-welcome strong {
  color: var(--text-secondary);
}

.terminal-welcome .dim {
  font-size: 0.73rem;
  margin-top: 0.4rem;
}

/* Log lines */
.log-line {
  display: flex;
  gap: 0.75rem;
  padding: 0.2rem 0.4rem;
  border-radius: 3px;
  animation: lineIn 0.2s ease;
  align-items: flex-start;
}

.log-line:hover {
  background: rgba(148, 163, 184, 0.04);
}

@keyframes lineIn {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.log-timestamp {
  color: var(--text-muted);
  font-size: 0.7rem;
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 75px;
  padding-top: 2px;
}

.log-prefix {
  font-weight: 600;
  flex-shrink: 0;
  min-width: 22px;
  text-align: center;
}

.log-content {
  flex: 1;
  word-break: break-all;
  white-space: pre-wrap;
}

/* Log line types */
.log-line.type-sent { color: var(--color-sent); }
.log-line.type-sent .log-prefix { color: var(--color-sent); }

.log-line.type-received { color: var(--color-received); }
.log-line.type-received .log-prefix { color: var(--color-received); }

.log-line.type-info { color: var(--color-info); }
.log-line.type-info .log-prefix { color: var(--color-info); }

.log-line.type-error { color: var(--color-error); }
.log-line.type-error .log-prefix { color: var(--color-error); }

.log-line.type-tls { color: var(--color-tls); }
.log-line.type-tls .log-prefix { color: var(--color-tls); }

.log-line.type-complete { color: var(--color-complete); }
.log-line.type-complete .log-prefix { color: var(--color-complete); }

/* --- Footer --- */
#app-footer {
  text-align: center;
  padding: 1rem;
  font-size: 0.73rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
}

#app-footer a {
  color: var(--text-link);
  text-decoration: none;
}

#app-footer a:hover {
  text-decoration: underline;
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* --- Responsive --- */
@media (max-width: 900px) {
  #app-main {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  #config-panel {
    position: static;
  }

  #terminal-panel {
    min-height: 400px;
  }

  .header-badge {
    display: none;
  }

  .log-timestamp {
    display: none;
  }
}

@media (max-width: 500px) {
  .security-options {
    grid-template-columns: 1fr;
  }

  .form-row {
    flex-direction: column;
    align-items: stretch;
  }

  .port-presets {
    justify-content: stretch;
  }

  .port-presets .preset-btn {
    flex: 1;
    text-align: center;
  }
}