/* ============================================================
   CAPITAL BUILD CONSTRUCTION — Component Library
   Buttons, Cards, Form Inputs
   ============================================================ */

/* ------------------------------------------------------------
   1. BUTTONS
   ------------------------------------------------------------ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  text-decoration: none;
  line-height: var(--leading-none);
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition-base);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 2px;
}

/* Primary — Gold CTA */
.btn-primary {
  background-color: var(--color-gold);
  color: var(--color-navy-dark);
  border-color: var(--color-gold);
}

.btn-primary:hover {
  background-color: var(--color-gold-dark);
  border-color: var(--color-gold-dark);
  box-shadow: var(--shadow-gold);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Secondary — Navy outline */
.btn-secondary {
  background-color: transparent;
  color: var(--color-navy);
  border-color: var(--color-navy);
}

.btn-secondary:hover {
  background-color: var(--color-navy);
  color: var(--color-offwhite);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

/* Secondary on dark backgrounds */
.section--dark .btn-secondary,
.btn-secondary--inverse {
  color: var(--color-offwhite);
  border-color: var(--color-offwhite);
}

.section--dark .btn-secondary:hover,
.btn-secondary--inverse:hover {
  background-color: var(--color-offwhite);
  color: var(--color-navy);
}

/* Ghost — Minimal / text-link style */
.btn-ghost {
  background-color: transparent;
  color: var(--color-navy);
  border-color: transparent;
  padding-left: var(--space-2);
  padding-right: var(--space-2);
}

.btn-ghost::after {
  content: '→';
  display: inline-block;
  transition: transform var(--duration-base) var(--ease-out);
}

.btn-ghost:hover {
  color: var(--color-gold-dark);
}

.btn-ghost:hover::after {
  transform: translateX(4px);
}

.section--dark .btn-ghost {
  color: var(--color-gold-light);
}

/* Size variants */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-base);
}

.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
}

/* Full width on mobile */
.btn-block {
  width: 100%;
}

@media (min-width: 768px) {
  .btn-block {
    width: auto;
  }
}


/* ------------------------------------------------------------
   2. CARD COMPONENT
   ------------------------------------------------------------ */
.card {
  background-color: var(--color-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background-color: var(--color-gray-100);
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-out);
}

.card:hover .card__image img {
  transform: scale(1.05);
}

.card__image-overlay {
  position: absolute;
  top: var(--space-3);
  left: var(--space-3);
}

.card__tag {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  background-color: var(--color-navy);
  color: var(--color-offwhite);
  border-radius: var(--radius-sm);
}

.card__body {
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  flex: 1;
}

.card__title {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  color: var(--color-navy);
  margin-bottom: var(--space-3);
  line-height: var(--leading-snug);
}

.card__text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
  margin-bottom: var(--space-4);
  flex: 1;
}

.card__footer {
  margin-top: auto;
  padding-top: var(--space-4);
  border-top: var(--border-thin);
}

.card__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--color-navy);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: var(--transition-fast);
}

.card__link::after {
  content: '→';
  transition: transform var(--duration-base) var(--ease-out);
}

.card__link:hover {
  color: var(--color-gold-dark);
}

.card__link:hover::after {
  transform: translateX(4px);
}

/* Card variant on dark backgrounds */
.section--dark .card {
  background-color: var(--color-navy-light);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.section--dark .card__title {
  color: var(--color-offwhite);
}

.section--dark .card__text {
  color: var(--color-gray-300);
}

.section--dark .card__link {
  color: var(--color-gold-light);
}

.section--dark .card__footer {
  border-top-color: rgba(255, 255, 255, 0.1);
}


/* ------------------------------------------------------------
   3. FORM INPUTS
   ------------------------------------------------------------ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-navy);
  letter-spacing: var(--tracking-wide);
}

.form-label--required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-gray-400);
}

.form-input:hover,
.form-textarea:hover,
.form-select:hover {
  border-color: var(--color-gray-300);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--color-gold);
  box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.15);
}

.form-textarea {
  min-height: 140px;
  resize: vertical;
}

/* Select arrow */
.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%239B9588' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  padding-right: var(--space-10);
}

/* Error state */
.form-input--error,
.form-textarea--error,
.form-select--error {
  border-color: var(--color-error);
}

.form-input--error:focus,
.form-textarea--error:focus {
  box-shadow: 0 0 0 3px rgba(192, 57, 43, 0.15);
}

.form-error {
  font-size: var(--text-xs);
  color: var(--color-error);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* Success state */
.form-input--success {
  border-color: var(--color-success);
}

/* Checkbox / Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 20px;
  height: 20px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--color-gold);
}

.form-check-label {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-normal);
}
/* ============================================================
   BACK TO TOP — Premium Floating Button
   ============================================================ */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: calc(var(--z-sticky) - 1);
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background-color: var(--color-navy);
  color: var(--color-gold);
  border: 2px solid var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transform: translateY(24px);
  transition: all var(--duration-base) var(--ease-out);
  box-shadow: var(--shadow-lg), 0 0 0 4px rgba(201,168,76,0.08);
  cursor: pointer;
}

.back-to-top--visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--color-gold);
  color: var(--color-navy-dark);
  border-color: var(--color-gold-dark);
  box-shadow: var(--shadow-xl), 0 0 0 4px rgba(201,168,76,0.15);
}

.back-to-top:focus-visible {
  outline: 3px solid var(--color-focus);
  outline-offset: 3px;
}

/* ============================================================
   TOP-TIER FEATURED CTA TILE
   ============================================================ */
.service-tile--cta {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 320px;
  padding: clamp(1.75rem, 4vw, 2.5rem);
  border-radius: var(--radius-md, 12px);
  background-color: var(--color-navy-dark, #060F1F);
  /* Deep architectural gradient */
  background-image: linear-gradient(145deg, #0d2240 0%, #060f1f 100%);
  border: 1px solid rgba(201, 168, 76, 0.25);
  box-shadow: 0 16px 40px rgba(6, 15, 31, 0.35);
  overflow: hidden;
  text-decoration: none;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Ambient Radial Gold Glow */
.service-tile--cta .service-tile__bg-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 90% 10%, 
    rgba(201, 168, 76, 0.22) 0%, 
    transparent 65%
  );
  pointer-events: none;
  transition: opacity 0.5s ease;
}

/* Subtle Architectural Grid Pattern Overlay */
.service-tile--cta .service-tile__grid-pattern {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(201, 168, 76, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(201, 168, 76, 0.04) 1px, transparent 1px);
  background-size: 32px 32px;
  pointer-events: none;
  opacity: 0.8;
}

/* Content Container */
.service-tile--cta .service-tile__content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  height: 100%;
}

/* Header & Eyebrows */
.service-tile--cta .service-tile__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 1.25rem;
}

.service-tile--cta .service-tile__eyebrow {
  font-family: var(--font-body, sans-serif);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-gold, #C9A84C);
}

.service-tile--cta .service-tile__badge {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-offwhite, #F7F5F0);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
  padding: 4px 10px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

/* Typography */
.service-tile--cta .service-tile__title {
  font-family: var(--font-heading, serif);
  font-size: clamp(1.5rem, 3.5vw, 2.15rem);
  font-weight: 400;
  color: var(--color-white, #ffffff);
  line-height: 1.2;
  margin: 0 0 0.75rem 0;
  transition: color 0.3s ease;
}

.service-tile--cta .service-tile__desc {
  font-size: 0.9rem;
  color: var(--color-gray-300, #cbd5e1);
  line-height: 1.55;
  margin: 0 0 2rem 0;
  max-width: 90%;
}

/* Action Button */
.service-tile--cta .service-tile__action {
  margin-top: auto;
}

.service-tile--cta .service-tile__cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-navy-dark, #060F1F);
  background-color: var(--color-gold, #C9A84C);
  padding: 12px 22px;
  border-radius: 999px;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.25);
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.service-tile--cta .service-tile__cta-btn svg {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

/* ============================================================
   HOVER & FOCUS STATES
   ============================================================ */
.service-tile--cta:hover,
.service-tile--cta:focus-visible {
  transform: translateY(-6px);
  border-color: var(--color-gold, #C9A84C);
  box-shadow: 0 24px 50px rgba(6, 15, 31, 0.5), 
              0 0 30px rgba(201, 168, 76, 0.2);
  outline: none;
}

.service-tile--cta:hover .service-tile__bg-glow {
  opacity: 1;
  background: radial-gradient(
    circle at 90% 10%, 
    rgba(201, 168, 76, 0.38) 0%, 
    transparent 70%
  );
}

.service-tile--cta:hover .service-tile__title {
  color: var(--color-offwhite, #F7F5F0);
}

.service-tile--cta:hover .service-tile__cta-btn {
  background-color: #ffffff;
  color: var(--color-navy-dark, #060F1F);
  box-shadow: 0 6px 24px rgba(255, 255, 255, 0.3);
}

.service-tile--cta:hover .service-tile__cta-btn svg {
  transform: translateX(4px);
}