:root {
  --font-sans: "Inter", sans-serif;
  --text-color: rgb(25, 25, 24);
  --bg-color: #fafafa;
  --border-color: rgba(55, 53, 47, 0.12);
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
}

body {
  font-family: var(--font-sans);
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: var(--space-32) var(--space-24);
}

/* ========== APP HEADER ========== */
.app-header {
  text-align: center;
  margin-bottom: var(--space-24);
  padding: var(--space-16) var(--space-24);
  margin: calc(-1 * var(--space-32)) calc(-1 * var(--space-24)) var(--space-24);
}

.app-header__title {
  font-size: 36px;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text-color);
  margin: 0;
  padding-bottom: var(--space-16);
}

.app-header__title::after {
  content: "";
  display: block;
  width: 40%;
  height: 1px;
  background: var(--border-color);
  margin: var(--space-16) auto 0;
}

h2 {
  font-size: 28px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -0.01em;
  margin-bottom: 24px;
}

h3 {
  font-size: 22px;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.005em;
  margin-bottom: 12px;
}

p {
  font-size: 18px;
  font-weight: 400;
  margin-bottom: 16px;
  color: rgba(25, 25, 24, 0.9);
}

/* Inputs & Buttons */
.input-section {
  margin-bottom: 48px;
}

.input-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

label {
  font-size: 16px;
  font-weight: 600;
  color: rgba(25, 25, 24, 0.8);
}

.input-group {
  display: flex;
  gap: 12px;
}

input[type="text"] {
  flex: 1;
  font-size: 18px;
  padding: 12px 16px;
  border: 0.5px solid rgba(55, 53, 47, 0.16);
  border-radius: 8px;
  outline: none;
  transition: border-color 0.2s;
  font-family: "Inter", sans-serif;
}

input[type="text"]:focus {
  border-color: #2383e2;
}

.primary-btn {
  font-size: 16px;
  font-weight: 500;
  padding: 10px 20px;
  border-radius: 50px;
  background: #000000;
  color: white;
  border: none;
  cursor: pointer;
  transition: background 0.2s;
  white-space: nowrap;
  font-family: "Inter", sans-serif;
}

.primary-btn:hover {
  background: #1a1a1a;
}

.primary-btn:active {
  background: #333333;
}

.primary-btn:disabled {
  background: rgba(35, 131, 226, 0.5);
  cursor: not-allowed;
}

/* Results */
.results-section {
  margin-top: 64px;
  border-top: 0.5px solid rgba(55, 53, 47, 0.16);
  padding-top: 48px;
}

.task-requirement-box {
  background: rgba(55, 53, 47, 0.04);
  padding: 24px;
  border-radius: 12px;
  margin-bottom: 48px;
}

.task-requirement-box h3 {
  margin-top: 0;
  font-size: 18px;
  color: rgba(25, 25, 24, 0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.best-overall-card {
  background: #ffffff;
  border: 0.5px solid rgba(55, 53, 47, 0.16);
  border-radius: 16px;
  padding: 32px;
  margin-bottom: 48px;
  box-shadow: 0 4px 20px rgba(35, 131, 226, 0.1);
  position: relative;
}

.best-overall-badge {
  position: absolute;
  top: -12px;
  left: 24px;
  background: #2383e2;
  color: white;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
}

.alternatives-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
}

.alternative-card {
  background: rgba(55, 53, 47, 0.02);
  border: 0.5px solid rgba(55, 53, 47, 0.16);
  border-radius: 12px;
  padding: 24px;
  transition: transform 0.2s, box-shadow 0.2s;
}

.alternative-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.app-name {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 8px;
}

.app-explanation {
  font-size: 18px;
  color: rgba(25, 25, 24, 0.8);
  margin-bottom: 16px;
}

.tags-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 13px;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 4px;
}

.tag-platform {
  background: rgba(55, 53, 47, 0.08);
  color: rgba(25, 25, 24, 0.6);
}

.tag-capability {
  background: rgba(35, 131, 226, 0.1);
  color: #2383e2;
}

/* Loader */
.loader-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 48px 0;
}

.loader {
  width: 40px;
  height: 40px;
  border: 3px solid rgba(35, 131, 226, 0.1);
  border-radius: 50%;
  border-top-color: #2383e2;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.hidden {
  display: none;
}

/* Footer */
.footer {
  margin-top: 80px;
  text-align: center;
  border-top: 0.5px solid rgba(55, 53, 47, 0.16);
  padding-top: 32px;
}

.footer p {
  font-size: 14px;
  color: rgba(25, 25, 24, 0.4);
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: var(--space-24) var(--space-16);
  }

  .app-header {
    padding: var(--space-12) var(--space-16);
    margin: calc(-1 * var(--space-24)) calc(-1 * var(--space-16)) var(--space-20);
  }

  .app-header__title {
    font-size: 28px;
  }

  .input-group {
    flex-direction: column;
  }
}