/* ==========================================================================
   COMPONENT STYLES: Buttons, Cards, Steps, Forms, Modals & Theme Toggle
   ========================================================================== */

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-block;
  background-color: var(--amber);
  color: #1a1200;
  font: 800 16px var(--font-head);
  padding: 14px 26px;
  border: 0;
  border-radius: 4px;
  text-decoration: none;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.btn:hover {
  filter: brightness(0.95);
}

.btn--outline {
  background: none;
  color: #ffffff;
  border: 2px solid #ffffff;
  margin-left: 10px;
}

.btn--outline:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

/* --------------------------------------------------------------------------
   Cards
   -------------------------------------------------------------------------- */
.card {
  display: block;
  height: 100%;
  text-decoration: none;
  color: inherit;
  background-color: var(--card-bg, var(--bg));
  border: 1px solid var(--line);
  border-left: 5px solid var(--blue);
}

a.card {
  transition:
    transform 0.3s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.3s ease,
    border-color 0.2s ease;
}

a.card:hover {
  border-left-color: var(--amber);
  transform: translateY(-6px);
  box-shadow: 0 18px 28px -12px rgba(31, 79, 216, 0.25);
}

.card__body {
  padding: 18px 20px;
}

.card__body h3 {
  margin-bottom: 6px;
}

.card__body p {
  margin: 0;
  font-size: 15.5px;
}

.card img {
  aspect-ratio: 16 / 10;
  object-fit: cover;
  width: 100%;
}

/* --------------------------------------------------------------------------
   Badges, Icons & Steps
   -------------------------------------------------------------------------- */
.tag {
  display: inline-block;
  background-color: var(--bg-soft);
  border: 1px solid var(--line);
  font-size: 13px;
  padding: 2px 10px;
  margin-bottom: 8px;
  color: var(--heading);
  border-radius: 2px;
}

.icon {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  margin-bottom: 12px;
  background-color: var(--navy);
  color: var(--amber);
  font-size: 20px;
  border-radius: 50%;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  list-style: none;
  padding: 0;
  margin: 0;
}

.steps li {
  border-top: 4px solid var(--amber);
  padding-top: 12px;
}

.steps strong {
  display: block;
  font: 800 19px var(--font-head);
  color: var(--heading);
  margin-bottom: 4px;
}

.person img {
  aspect-ratio: 1;
  object-fit: cover;
  width: 100%;
  margin-bottom: 12px;
  border-radius: 4px;
}

.person__role {
  color: var(--blue);
  font-weight: 600;
  font-size: 15px;
}

/* --------------------------------------------------------------------------
   Forms & Controls
   -------------------------------------------------------------------------- */
.form {
  display: grid;
  gap: 16px;
  max-width: 640px;
}

.form label {
  font-weight: 600;
  color: var(--heading);
  margin-bottom: 4px;
  display: block;
}

.form input,
.form textarea,
.estimator select {
  width: 100%;
  font: inherit;
  padding: 13px;
  border: 1px solid var(--line);
  background-color: var(--bg);
  color: var(--text);
  border-radius: 4px;
  transition: border-color 0.2s ease, outline 0.2s ease;
}

.form input[type="file"] {
  padding: 10px;
  cursor: pointer;
  background-color: var(--bg-soft);
  border: 1px dashed var(--line);
}

.form input[type="file"]::file-selector-button {
  background-color: var(--navy);
  color: #ffffff;
  border: 0;
  padding: 8px 16px;
  border-radius: 4px;
  font: 600 14px var(--font-body);
  cursor: pointer;
  margin-right: 12px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

:root[data-theme="dark"] .form input[type="file"]::file-selector-button {
  background-color: var(--blue);
}

.form input[type="file"]::file-selector-button:hover {
  background-color: var(--amber);
  color: #1a1200;
}

.form__hint {
  font-size: 13.5px;
  font-weight: 400;
  color: var(--text);
  opacity: 0.85;
}

.form__hint-text {
  font-size: 13px;
  color: var(--text);
  margin: 6px 0 0;
  opacity: 0.85;
}

.form input:focus,
.form textarea:focus,
.estimator select:focus {
  border-color: var(--blue);
  outline: 2px solid var(--blue);
}

.estimator input[type="range"] {
  width: 100%;
  accent-color: var(--blue);
}

.form__error {
  color: #b42318;
  font-size: 14px;
  min-height: 1.2em;
  margin: 4px 0 0;
}

.notice {
  background-color: var(--bg-soft);
  border-left: 5px solid var(--amber);
  padding: 22px;
  max-width: 640px;
}

/* --------------------------------------------------------------------------
   Filter Chips
   -------------------------------------------------------------------------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 24px;
}

.chip {
  font: 600 15px var(--font-body);
  padding: 9px 18px;
  border: 1px solid var(--line);
  background-color: var(--bg);
  color: var(--heading);
  border-radius: 40px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.chip:hover {
  border-color: var(--heading);
}

.chip[aria-pressed="true"] {
  background-color: var(--blue);
  color: #ffffff;
  border-color: var(--blue);
}

/* --------------------------------------------------------------------------
   Modal Dialog
   -------------------------------------------------------------------------- */
.modal {
  max-width: 460px;
  border: 0;
  border-top: 6px solid var(--amber);
  padding: 28px;
  background-color: var(--card-bg, var(--bg));
  color: var(--text);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.modal::backdrop {
  background: rgba(8, 18, 38, 0.7);
  backdrop-filter: blur(3px);
}

/* --------------------------------------------------------------------------
   Floating WhatsApp Button
   -------------------------------------------------------------------------- */
.whatsapp {
  position: fixed;
  right: 18px;
  bottom: calc(18px + env(safe-area-inset-bottom, 0px));
  background-color: #25d366;
  color: #073b1a;
  font: 800 15px var(--font-head);
  padding: 13px 18px;
  border-radius: 40px;
  text-decoration: none;
  z-index: 30;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.25);
  transition: transform 0.2s ease, filter 0.2s ease;
}

.whatsapp:hover {
  transform: translateY(-2px);
  filter: brightness(1.05);
}

/* --------------------------------------------------------------------------
   Theme Toggle Button
   -------------------------------------------------------------------------- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--line);
  background-color: var(--bg-soft);
  color: var(--heading);
  cursor: pointer;
  padding: 0;
  flex-shrink: 0;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.theme-toggle:hover {
  background-color: var(--line);
  color: var(--amber);
  transform: scale(1.06);
}

.theme-toggle:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

.theme-toggle__icons {
  position: relative;
  width: 20px;
  height: 20px;
  display: grid;
  place-items: center;
}

.theme-toggle__icon {
  position: absolute;
  font-size: 18px;
  line-height: 1;
  transition:
    transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
    opacity 0.2s ease;
}

/* Light Mode: Moon visible, Sun hidden */
:root:not([data-theme="dark"]) .theme-toggle__icon--sun {
  opacity: 0;
  transform: rotate(90deg) scale(0.4);
  pointer-events: none;
}

:root:not([data-theme="dark"]) .theme-toggle__icon--moon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

/* Dark Mode: Sun visible, Moon hidden */
:root[data-theme="dark"] .theme-toggle__icon--moon {
  opacity: 0;
  transform: rotate(-90deg) scale(0.4);
  pointer-events: none;
}

:root[data-theme="dark"] .theme-toggle__icon--sun {
  opacity: 1;
  transform: rotate(0deg) scale(1);
  color: var(--amber);
}

/* System Dark Mode Fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-toggle__icon--moon {
    opacity: 0;
    transform: rotate(-90deg) scale(0.4);
    pointer-events: none;
  }

  :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-toggle__icon--sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
    color: var(--amber);
  }
}