@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&display=swap');

/* ==========================================================================
   DESIGN SYSTEM: Sleek Dark Mode (Single Page)
   ========================================================================== */

:root {
  --bg-primary: #0e1116;
  --bg-secondary: #161b22;
  --text-primary: #f0f6fc;
  --text-secondary: #8b949e;
  --border-color: #30363d;
  --accent: #ffffff;
  --error: #f85149;
}

/* ==========================================================================
   BASE & RESET
   ========================================================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-secondary);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-secondary);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */

h1, h2, h3 {
  color: var(--text-primary);
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.04em;
  margin-bottom: 0.5rem;
}

h2 {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 3rem;
}

h3 {
  font-size: 1.25rem;
  margin-top: 3rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
  letter-spacing: -0.01em;
}

p {
  margin-bottom: 1.5rem;
  font-weight: 300;
}

/* ==========================================================================
   LAYOUT
   ========================================================================== */

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: clamp(60px, 10vh, 120px) 24px;
}

section {
  margin-bottom: clamp(60px, 10vh, 100px);
}

/* ==========================================================================
   LISTS (Specialties)
   ========================================================================== */

.specialties-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.specialties-list li {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 400;
}

/* ==========================================================================
   FORM
   ========================================================================== */

.contact-form {
  margin-top: 2rem;
}

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  background-color: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 1rem;
  padding: 8px 0;
  outline: none;
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-bottom-color: var(--accent);
}

.form-group select {
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
  border-radius: 0;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

button[type="submit"] {
  background-color: var(--text-primary);
  color: var(--bg-primary);
  border: none;
  padding: 12px 32px;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  border-radius: 4px;
  cursor: pointer;
  transition: opacity 0.2s ease;
  margin-top: 1rem;
}

button[type="submit"]:hover {
  opacity: 0.9;
}

button[type="submit"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.error-text {
  color: var(--error);
  font-size: 0.8rem;
  margin-top: 4px;
  display: block;
}

.success-message {
  display: none;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 24px;
  border-radius: 8px;
  text-align: center;
  margin-top: 2rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */

footer {
  margin-top: 100px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: center;
}