/* ============================================================
   BASE — Reset, Typography, Layout, Buttons, Utilities
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-base);
  font-size: var(--body-font-size);
  line-height: var(--body-line-height);
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition);
}
a:hover { color: var(--color-accent-dark); }
a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul, ol { list-style: none; }

button {
  cursor: pointer;
  font-family: var(--font-base);
  border: none;
  background: none;
}
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

input, select, textarea {
  font-family: var(--font-base);
}

h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-dark);
  font-weight: var(--heading-weight);
  line-height: 1.3;
  letter-spacing: var(--heading-letter-spacing);
}

/* ---- Layout ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 20px;
}

@media (min-width: 768px) {
  .container { padding: 0 40px; }
}

.site-main {
  flex: 1;
  padding: var(--space-xl) 0;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--transition-slow), color var(--transition-slow), transform var(--transition), box-shadow var(--transition);
  cursor: pointer;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
  border: 2px solid var(--color-primary);
}
.btn-primary:hover {
  background: #333333;
  border-color: #333333;
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-border-dark);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: rgba(0,0,0,0.02);
}

.btn-accent {
  background: var(--color-accent);
  color: #fff;
  border: 2px solid var(--color-accent);
}
.btn-accent:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  color: #fff;
}

.btn-white {
  background: #fff;
  color: var(--color-primary);
  border: 2px solid #fff;
}
.btn-white:hover {
  background: rgba(255,255,255,0.9);
  border-color: rgba(255,255,255,0.9);
}

.btn-lg {
  padding: 16px 40px;
  font-size: 16px;
  font-weight: 700;
}

/* ---- Section Headings ---- */
.section-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text-dark);
  margin-bottom: var(--space-lg);
  letter-spacing: -0.01em;
}
.section-heading--center { text-align: center; }
.section-subtitle {
  font-size: 14px;
  color: var(--color-text-muted);
  margin-top: -12px;
  margin-bottom: var(--space-xl);
  line-height: 1.6;
}
.section-subtitle--center { text-align: center; }

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
  flex-wrap: wrap;
  gap: var(--space-md);
}
.section-view-all {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-accent);
  white-space: nowrap;
  transition: color var(--transition);
}
.section-view-all:hover { color: var(--color-accent-dark); }

/* ---- Page Header ---- */
.page-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
}
.page-title {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--color-text-dark);
  line-height: 1.2;
  letter-spacing: -0.01em;
}
.result-count {
  background: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  font-size: 13px;
  color: var(--color-text-muted);
  white-space: nowrap;
}

/* ---- Breadcrumbs ---- */
.breadcrumbs {
  margin-bottom: var(--space-lg);
  padding: var(--space-sm) 0;
}
.breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  color: var(--color-text-muted);
}
.breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 6px;
}
.breadcrumbs a {
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.breadcrumbs a:hover { color: var(--color-accent); }
.breadcrumbs span[aria-current] {
  color: var(--color-text);
  font-weight: 500;
}
.breadcrumb-sep { color: var(--color-border-dark); font-size: 11px; }

/* ---- Utility Classes ---- */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---- Selection & Scrollbar ---- */
::selection {
  background: var(--color-accent);
  color: #fff;
}
::-moz-selection {
  background: var(--color-accent);
  color: #fff;
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg-light); }
::-webkit-scrollbar-thumb {
  background: var(--color-border-dark);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-muted); }

/* ---- Flash Messages ---- */
.flash-message {
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-lg);
  font-size: 14px;
  font-weight: 500;
}
.flash-success { background: #ecfdf5; color: #065f46; border: 1px solid #a7f3d0; }
.flash-error   { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }
.flash-info    { background: #eff6ff; color: #1e40af; border: 1px solid #bfdbfe; }