/* ================================
   BASE STYLES & UTILITIES
   One Thought Journal - Marketing Site
   ================================ */

/* Modern CSS reset (light) */
*, *::before, *::after {
  box-sizing: border-box;
}

html:focus-within {
  scroll-behavior: smooth;
}

html, body {
  height: 100%;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  line-height: var(--lh-relaxed);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.no-scroll {
  overflow: hidden;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
}

a {
  color: inherit;
  text-decoration: none;
}

a:focus-visible, button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  border: 0;
}

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

.container {
  width: min(100%, var(--container-max));
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container-narrow {
  width: min(100%, var(--container-narrow));
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.section {
  padding-block: var(--space-16);
}

.section--tight {
  padding-block: var(--space-12);
}

.section--spacious {
  padding-block: var(--space-20);
}

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

h1, h2, h3, h4, h5, h6 {
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-6);
  letter-spacing: -0.01em;
  font-weight: var(--font-weight-bold);
}

h1 {
  font-size: var(--fs-xxl);
}

h2 {
  font-size: var(--fs-xl);
}

h3 {
  font-size: var(--fs-lg);
  font-weight: var(--font-weight-medium);
}

p {
  margin: 0 0 var(--space-6);
  font-size: var(--fs-sm);
  color: var(--color-text);
}

.lead {
  font-size: var(--fs-md);
  color: var(--color-text-muted);
}

.eyebrow {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--color-text-muted);
  font-weight: var(--font-weight-medium);
}

/* ================================
   UTILITY SPACING
   ================================ */

.stack > * + * {
  margin-top: var(--space-4);
}

.stack-lg > * + * {
  margin-top: var(--space-8);
}

.grid {
  display: grid;
  gap: var(--space-8);
}

.grid-2 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
}

.grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ================================
   BUTTONS
   ================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  padding: .75rem 1.125rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-weight: var(--font-weight-medium);
  font-size: var(--fs-sm);
  transition: background var(--transition-base), color var(--transition-base), border var(--transition-base), transform var(--transition-quick);
  cursor: pointer;
  text-align: center;
  line-height: 1;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-accent-contrast);
}

.btn--primary:hover {
  filter: brightness(0.95);
  transform: translateY(-1px);
}

.btn--ghost {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--ghost:hover {
  border-color: var(--color-text);
}

/* ================================
   CARDS
   ================================ */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-8);
  transition: box-shadow var(--transition-base), transform var(--transition-quick);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ================================
   LINKS
   ================================ */

.link {
  color: var(--color-accent);
}

.link:hover {
  text-decoration: underline;
}

/* ================================
   DIVIDERS
   ================================ */

.hr {
  height: 1px;
  background: var(--color-border);
  border: 0;
  margin: var(--space-6) 0;
}

/* ================================
   PRICING
   ================================ */

.price {
  font-size: var(--fs-lg);
  font-weight: var(--font-weight-bold);
}

.popular {
  border-color: rgba(24, 131, 252, .25);
  box-shadow: 0 0 0 2px rgba(24, 131, 252, .12);
}