/**
 * Signal Card — Premium Trading Signal Display
 *
 * "Opportunity favors the prepared mind." — Pasteur
 *
 * Signals are precious: they represent analyzed opportunities.
 * The design should convey confidence without urgency,
 * information without overwhelm.
 */

/* ========== Signal Card Foundation ========== */

.signal-card {
  position: relative;
  background: var(--bg-surface);
  border: 1px solid var(--border-dim);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  overflow: hidden;
  transition:
    background var(--duration-normal) var(--ease-out),
    border-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out),
    filter var(--duration-normal) var(--ease-out);
}

/* Subtle gradient overlay */
.signal-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    165deg,
    rgba(255, 255, 255, 0.02) 0%,
    transparent 50%
  );
  pointer-events: none;
  border-radius: inherit;
}

/* Top edge light */
.signal-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: var(--space-5);
  right: var(--space-5);
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.06),
    transparent
  );
  pointer-events: none;
}

.signal-card:hover {
  border-color: var(--border);
  transform: translateY(-2px);
  box-shadow:
    0 4px 12px rgba(0, 0, 0, 0.1),
    0 0 0 1px var(--border-dim);
}

/* Active signal glow */
.signal-card--active {
  border-color: rgba(99, 102, 241, 0.3);
}

.signal-card--active::after {
  background: linear-gradient(
    90deg,
    transparent,
    var(--accent-primary),
    transparent
  );
  opacity: 0.5;
  height: 2px;
}

/* Expired state */
.signal-card--expired {
  opacity: 0.6;
  filter: grayscale(30%);
}

/* ========== Header ========== */

.signal-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
}

.signal-card__status {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.signal-card__status-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--text-tertiary);
  transition:
    background-color var(--duration-normal) var(--ease-out),
    box-shadow var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.signal-card__status-dot--active {
  background: var(--color-success);
  box-shadow: 0 0 8px rgba(34, 197, 94, 0.5);
  animation: pulse-gentle 2s var(--ease-in-out) infinite;
}

@keyframes pulse-gentle {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.8; transform: scale(1.1); }
}

.signal-card__status-text {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
}

/* TTL countdown */
.signal-card__ttl {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  padding: var(--space-1) var(--space-2);
  background: var(--bg-primary);
  border-radius: var(--radius);
  transition:
    color var(--duration-normal) var(--ease-out),
    background-color var(--duration-normal) var(--ease-out),
    opacity var(--duration-normal) var(--ease-out);
}

.signal-card__ttl--warning {
  color: var(--color-warning);
  background: var(--color-warning-dim);
}

.signal-card__ttl--critical {
  color: var(--color-danger);
  background: var(--color-danger-dim);
  animation: ttl-pulse 1s var(--ease-in-out) infinite;
}

@keyframes ttl-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* ========== Main Content ========== */

.signal-card__main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-4);
}

.signal-card__direction {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.signal-card__side {
  font-size: var(--text-xl);
  line-height: 1;
  transition: transform var(--duration-fast) var(--ease-out);
}

.signal-card:hover .signal-card__side {
  transform: scale(1.1);
}

.signal-card__side--long {
  color: var(--color-long);
}

.signal-card__side--short {
  color: var(--color-short);
}

.signal-card__symbol {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

.signal-card__side-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Grade badge */
.signal-card__grade {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-semibold);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  background: var(--accent-dim);
  color: var(--accent-primary);
}

.signal-card__grade--a-plus {
  background: rgba(16, 185, 129, 0.12);
  color: var(--color-long);
  box-shadow: 0 0 12px rgba(16, 185, 129, 0.2);
}

.signal-card__grade--a {
  background: rgba(16, 185, 129, 0.08);
  color: var(--color-long);
}

.signal-card__grade--b-plus,
.signal-card__grade--b {
  background: var(--color-warning-dim);
  color: var(--color-warning);
}

.signal-card__grade--c {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-secondary);
}

.signal-card__grade--d,
.signal-card__grade--f,
.signal-card__grade--default {
  background: var(--color-danger-dim);
  color: var(--color-danger);
}

/* ========== Confidence Bar ========== */

.signal-card__confidence {
  margin-bottom: var(--space-4);
}

.signal-card__confidence-bar {
  height: 4px;
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.signal-card__confidence-fill {
  width: var(--signal-confidence-width, 0%);
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease-smooth);
  background: linear-gradient(90deg, var(--accent-primary), var(--color-success));
}

.signal-card__confidence-fill--high {
  background: linear-gradient(90deg, var(--color-success), var(--color-success));
}

.signal-card__confidence-fill--medium {
  background: linear-gradient(90deg, var(--color-warning), var(--color-warning));
}

.signal-card__confidence-fill--low {
  background: linear-gradient(90deg, var(--text-tertiary), var(--text-tertiary));
}

.signal-card__confidence-label {
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
}

.signal-card__confidence-label--high {
  color: var(--color-success);
}

.signal-card__confidence-label--medium {
  color: var(--color-warning);
}

.signal-card__confidence-label--low {
  color: var(--text-tertiary);
}

/* ========== Price Levels ========== */

.signal-card__levels {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.signal-card__level {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.signal-card__level-label {
  font-size: var(--text-2xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.signal-card__level-value {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.signal-card__level-pct {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--text-tertiary);
}

.signal-card__levels-empty {
  grid-column: 1 / -1;
  padding: var(--space-2) var(--space-3);
  border: 1px dashed var(--border-dim);
  border-radius: var(--radius);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
}

/* ========== Actions ========== */

.signal-card__actions {
  display: flex;
  gap: var(--space-2);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border-dim);
}

.signal-card__btn {
  flex: 1;
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius);
  cursor: pointer;
  transition:
    color var(--duration-fast) var(--ease-out),
    background-color var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

.signal-card__btn--primary {
  background: var(--accent-primary);
  border: 1px solid var(--accent-primary);
  color: white;
}

.signal-card__btn--primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 0 16px var(--accent-dim);
}

.signal-card__btn--primary:active {
  transform: scale(0.98);
}

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

.signal-card__btn--secondary:hover {
  background: var(--bg-hover);
  border-color: var(--border-bright);
  color: var(--text-primary);
}

.signal-card__btn--secondary:active {
  transform: scale(0.98);
}

/* ========== Responsive ========== */

@media (max-width: 480px) {
  .signal-card {
    padding: var(--space-4);
  }

  .signal-card__levels {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }

  .signal-card__symbol {
    font-size: var(--text-xl);
  }

  .signal-card__actions {
    flex-direction: column;
  }
}

/* ========== Light Mode ========== */

[data-theme="light"] .signal-card::before {
  background: linear-gradient(
    165deg,
    rgba(0, 0, 0, 0.01) 0%,
    transparent 50%
  );
}

[data-theme="light"] .signal-card::after {
  background: linear-gradient(
    90deg,
    transparent,
    rgba(0, 0, 0, 0.04),
    transparent
  );
}

/* ========== Reduced Motion ========== */

@media (prefers-reduced-motion: reduce) {
  .signal-card__status-dot--active,
  .signal-card__ttl--critical {
    animation: none;
  }

  .signal-card,
  .signal-card__btn,
  .signal-card__side {
    transition: none;
  }
}

/* ========== Signal Execution Modal ========== */

.signal-exec {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.signal-exec__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3);
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-dim);
  border-left-width: 3px;
}

.signal-exec__header--long {
  background: var(--color-long-bg);
  border-left-color: var(--color-long);
}

.signal-exec__header--short {
  background: var(--color-short-bg);
  border-left-color: var(--color-short);
}

.signal-exec__header--unknown {
  border-left-color: var(--border);
}

.signal-exec__title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
}

.signal-exec__meta {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-top: var(--space-1);
}

.signal-exec__entry {
  padding: var(--space-2) var(--space-3);
  background: var(--bg-elevated);
  border-radius: var(--radius);
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  font-family: var(--font-mono);
  color: var(--text-primary);
  border: 1px solid var(--border-dim);
}

.signal-exec__levels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
}

.signal-exec__level {
  text-align: center;
  padding: var(--space-3);
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-dim);
}

.signal-exec__level--stop {
  background: var(--color-short-bg);
}

.signal-exec__level--target {
  background: var(--color-long-bg);
}

.signal-exec__level-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.signal-exec__level--stop .signal-exec__level-label,
.signal-exec__level--stop .signal-exec__level-value {
  color: var(--color-short);
}

.signal-exec__level--target .signal-exec__level-label,
.signal-exec__level--target .signal-exec__level-value {
  color: var(--color-long);
}

.signal-exec__level-value {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.signal-exec__levels-empty {
  grid-column: 1 / -1;
  padding: var(--space-3);
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px dashed var(--border-dim);
  color: var(--text-tertiary);
  font-size: var(--text-xs);
  text-align: center;
}

.signal-exec__risk {
  padding: var(--space-3);
  background: var(--bg-surface);
  border-radius: var(--radius);
  border: 1px solid var(--border-dim);
}

.signal-exec__risk-title {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.signal-exec__risk-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.signal-exec__risk-label {
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.signal-exec__risk-value {
  font-family: var(--font-mono);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
}

.signal-exec__risk-value--loss {
  color: var(--color-short);
}

.signal-exec__risk-value--profit,
.signal-exec__risk-value--good {
  color: var(--color-long);
}

.signal-exec__risk-empty {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  line-height: var(--line-height-relaxed);
}

.signal-exec__ttl-warning {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--color-warning-dim);
  border-radius: var(--radius);
  font-size: var(--text-xs);
  color: var(--color-warning);
  border: 1px solid rgba(245, 158, 11, 0.2);
}

.signal-exec__progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6) var(--space-4);
  gap: var(--space-4);
}

.signal-exec__progress-indicator {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
}

.signal-exec__progress-bar {
  width: 120px;
  height: 4px;
  background: var(--border-dim);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.signal-exec__progress-fill {
  width: 40%;
  height: 100%;
  background: var(--accent-primary);
  border-radius: var(--radius-full);
  animation: signal-exec-progress-slide 1.5s var(--ease-in-out) infinite;
}

@keyframes signal-exec-progress-slide {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(150%); }
  100% { transform: translateX(-100%); }
}

.signal-exec__progress-icon {
  font-size: var(--text-2xl);
  color: var(--accent-primary);
}

.signal-exec__progress-icon--success {
  color: var(--color-success);
}

.signal-exec__progress-icon--error {
  color: var(--color-danger);
}

.signal-exec__progress-status {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  text-align: center;
}

.signal-exec__progress-status--success {
  color: var(--color-success);
}

.signal-exec__progress-status--error {
  color: var(--color-danger);
}

.signal-exec__steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  width: 100%;
  max-width: 240px;
}

.signal-exec__step {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--text-tertiary);
}

.signal-exec__step-icon {
  width: 16px;
  height: 16px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  line-height: 1;
}

.signal-exec__step--active {
  color: var(--text-primary);
}

.signal-exec__step--active .signal-exec__step-icon {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
}

.signal-exec__step--complete {
  color: var(--text-secondary);
}

.signal-exec__step--complete .signal-exec__step-icon {
  border-color: var(--color-success);
  background: var(--color-success);
  color: white;
}

.signal-exec__step--error {
  color: var(--color-danger);
}

.signal-exec__step--error .signal-exec__step-icon {
  border-color: var(--color-danger);
  background: var(--color-danger);
  color: white;
}

.signal-exec__quick {
  text-align: center;
  padding: var(--space-3);
}

.signal-exec__quick-title {
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.signal-exec__quick-subtitle {
  font-size: var(--text-sm);
  color: var(--text-secondary);
}

@media (max-width: 480px) {
  .signal-exec__levels {
    grid-template-columns: 1fr;
  }

  .signal-exec__risk-grid {
    grid-template-columns: 1fr;
  }

  .signal-exec__entry {
    font-size: var(--text-lg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .signal-exec__progress-fill {
    animation: none;
  }
}