/* ===== TIDAL FELT — BASE FOUNDATION ===== */
/* Poker Dellballina — coastal poker room design system */

/* ---------- Design Tokens ---------- */
:root {
  /* Color tokens */
  --color-ocean-deep: #0B1F2A;
  --color-ocean-mid: #14313F;
  --color-felt-green: #1F6F5C;
  --color-sand-warm: #E8DCC8;
  --color-charcoal-room: #1C1C1C;
  --color-coral-clay: #C96F4A;
  --color-teak-dark: #3E2A1E;
  --color-mist-light: #F5F1E8;

  /* Semantic aliases */
  --color-bg-primary: var(--color-ocean-deep);
  --color-bg-secondary: var(--color-ocean-mid);
  --color-bg-light: var(--color-mist-light);
  --color-bg-light-warm: var(--color-sand-warm);
  --color-text-on-dark: var(--color-sand-warm);
  --color-text-on-light: var(--color-charcoal-room);
  --color-text-muted-on-dark: rgba(232, 220, 200, 0.7);
  --color-text-muted-on-light: rgba(28, 28, 28, 0.7);
  --color-accent-primary: var(--color-coral-clay);
  --color-accent-secondary: var(--color-felt-green);
  --color-border-dark: rgba(232, 220, 200, 0.15);
  --color-border-light: var(--color-charcoal-room);
  --color-focus: var(--color-felt-green);
  --color-overlay-dark: rgba(11, 31, 42, 0.8);
  --color-shadow-hover: 0 8px 24px rgba(0, 0, 0, 0.3);

  /* Typography */
  --font-heading: 'Playfair Display', 'Georgia', serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;

  --text-display: clamp(2.75rem, 6vw, 4.5rem); /* 44–72px */
  --text-h1: clamp(2.25rem, 4.5vw, 3.5rem);    /* 36–56px */
  --text-h2: clamp(1.75rem, 3vw, 2.5rem);      /* 28–40px */
  --text-h3: clamp(1.375rem, 2.25vw, 1.75rem); /* 22–28px */
  --text-h4: clamp(1.125rem, 1.5vw, 1.25rem);  /* 18–20px */
  --text-body-large: 1.125rem;                  /* 18px */
  --text-body: 1rem;                            /* 16px */
  --text-caption: 0.8125rem;                    /* 13px */
  --text-nav: 0.875rem;                         /* 14px */

  --leading-display: 1.05;
  --leading-h1: 1.1;
  --leading-h2: 1.15;
  --leading-h3: 1.2;
  --leading-h4: 1.3;
  --leading-body: 1.6;
  --leading-caption: 1.4;
  --leading-nav: 1.2;

  --tracking-display: -0.02em;
  --tracking-h1: -0.01em;
  --tracking-h2: 0;
  --tracking-h3: 0;
  --tracking-h4: 0.01em;
  --tracking-body: 0;
  --tracking-caption: 0.02em;
  --tracking-nav: 0.08em;

  /* Spacing scale */
  --space-2xs: 0.25rem;  /* 4px */
  --space-xs: 0.5rem;    /* 8px */
  --space-sm: 1rem;      /* 16px */
  --space-md: 1.5rem;    /* 24px */
  --space-lg: 2.5rem;    /* 40px */
  --space-xl: 4rem;      /* 64px */
  --space-2xl: 6rem;     /* 96px */
  --space-3xl: 8rem;     /* 128px */

  /* Container */
  --container-max: 1280px;
  --container-pad-mobile: 1.5rem;  /* 24px */
  --container-pad-desktop: 3rem;   /* 48px */

  /* Corner radius */
  --radius-default: 0px;
  --radius-interactive: 2px;

  /* Transitions */
  --transition-fast: 200ms ease-out;
  --transition-medium: 300ms ease-out;
  --transition-slow: 400ms ease-out;

  /* Borders */
  --border-width: 1px;
  --border-style: solid;
  --border-dark: var(--border-width) var(--border-style) var(--color-border-dark);
  --border-light: var(--border-width) var(--border-style) var(--color-border-light);

  /* Touch targets */
  --touch-target-min: 44px;
}

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

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

body {
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--color-text-on-dark);
  background-color: var(--color-bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

input,
button,
textarea,
select {
  font: inherit;
  letter-spacing: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

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

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

hr {
  border: none;
  border-top: var(--border-dark);
  margin: var(--space-lg) 0;
}

address {
  font-style: normal;
}

/* ---------- Document Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: inherit;
  line-height: var(--leading-h2);
  letter-spacing: var(--tracking-h2);
}

h1 {
  font-size: var(--text-h1);
  line-height: var(--leading-h1);
  letter-spacing: var(--tracking-h1);
  margin-block-end: var(--space-md);
}

h2 {
  font-size: var(--text-h2);
  margin-block-end: var(--space-md);
}

h3 {
  font-size: var(--text-h3);
  line-height: var(--leading-h3);
  margin-block-end: var(--space-sm);
}

h4 {
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
  letter-spacing: var(--tracking-h4);
  margin-block-end: var(--space-sm);
}

h5,
h6 {
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
  margin-block-end: var(--space-xs);
}

p {
  margin-block-end: var(--space-sm);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
}

/* Lead / intro paragraph */
p.lead,
.lead p {
  font-size: var(--text-body-large);
  line-height: var(--leading-body);
  margin-block-end: var(--space-md);
}

/* Lists within content */
ul:not([class]),
ol:not([class]) {
  margin-block-end: var(--space-md);
  padding-inline-start: var(--space-md);
}

ul:not([class]) {
  list-style: disc;
}

ol:not([class]) {
  list-style: decimal;
}

ul:not([class]) li,
ol:not([class]) li {
  margin-block-end: var(--space-xs);
  line-height: var(--leading-body);
}

ul:not([class]) li:last-child,
ol:not([class]) li:last-child {
  margin-block-end: 0;
}

/* Nested lists */
ul:not([class]) ul,
ul:not([class]) ol,
ol:not([class]) ul,
ol:not([class]) ol {
  margin-block-start: var(--space-xs);
  margin-block-end: 0;
}

blockquote {
  margin-block-end: var(--space-md);
  padding-inline-start: var(--space-md);
  border-inline-start: 3px solid var(--color-accent-secondary);
  font-family: var(--font-heading);
  font-size: var(--text-h4);
  line-height: var(--leading-h4);
  letter-spacing: var(--tracking-h4);
  color: inherit;
}

blockquote p {
  margin-block-end: var(--space-xs);
}

blockquote p:last-child {
  margin-block-end: 0;
}

blockquote cite {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caption);
  margin-block-start: var(--space-xs);
  opacity: 0.7;
}

figcaption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-caption);
  color: var(--color-text-muted-on-dark);
  margin-block-start: var(--space-xs);
  text-align: start;
}

/* Code and pre */
code,
pre {
  font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
  font-size: 0.875em;
}

pre {
  background: var(--color-ocean-mid);
  padding: var(--space-sm);
  border-radius: var(--radius-interactive);
  overflow-x: auto;
  margin-block-end: var(--space-md);
}

/* ---------- Media Defaults ---------- */
figure {
  margin: 0;
  margin-block-end: var(--space-md);
}

figure img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-default);
}

/* ---------- Form Defaults ---------- */
label {
  display: block;
  font-size: var(--text-caption);
  letter-spacing: var(--tracking-caption);
  text-transform: uppercase;
  margin-block-end: var(--space-2xs);
  color: inherit;
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="url"],
input[type="number"],
input[type="password"],
input[type="search"],
input[type="date"],
input[type="time"],
select,
textarea {
  display: block;
  width: 100%;
  min-height: var(--touch-target-min);
  padding: var(--space-xs) var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: var(--leading-body);
  letter-spacing: var(--tracking-body);
  color: var(--color-text-on-light);
  background-color: var(--color-bg-light);
  border: var(--border-light);
  border-radius: var(--radius-interactive);
  transition: border-color var(--transition-fast);
  appearance: none;
  -webkit-appearance: none;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-focus);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231C1C1C' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-sm) center;
  padding-inline-end: var(--space-lg);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted-on-light);
  opacity: 1;
}

/* Dark surface form variants */
.bg-dark input[type="text"],
.bg-dark input[type="email"],
.bg-dark input[type="tel"],
.bg-dark input[type="url"],
.bg-dark input[type="number"],
.bg-dark input[type="password"],
.bg-dark input[type="search"],
.bg-dark input[type="date"],
.bg-dark input[type="time"],
.bg-dark select,
.bg-dark textarea {
  color: var(--color-text-on-dark);
  background-color: var(--color-ocean-mid);
  border: var(--border-dark);
}

.bg-dark input::placeholder,
.bg-dark textarea::placeholder {
  color: var(--color-text-muted-on-dark);
}

.bg-dark select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23E8DCC8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}

/* ---------- Container ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--container-pad-desktop);
  }
}

/* ---------- Reusable Primitives ---------- */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: var(--touch-target-min);
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-body);
  font-size: var(--text-nav);
  line-height: var(--leading-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  text-align: center;
  border-radius: var(--radius-interactive);
  border: var(--border-width) var(--border-style) transparent;
  cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
  user-select: none;
  -webkit-user-select: none;
}

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

.btn-primary {
  background-color: var(--color-accent-primary);
  color: var(--color-mist-light);
  border-color: var(--color-accent-primary);
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-accent-secondary);
  border-color: var(--color-accent-secondary);
  color: var(--color-mist-light);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-on-dark);
  border-color: var(--color-sand-warm);
}

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-sand-warm);
  color: var(--color-charcoal-room);
  border-color: var(--color-sand-warm);
}

.btn-secondary-light {
  background-color: transparent;
  color: var(--color-text-on-light);
  border-color: var(--color-charcoal-room);
}

.btn-secondary-light:hover,
.btn-secondary-light:focus-visible {
  background-color: var(--color-charcoal-room);
  color: var(--color-mist-light);
  border-color: var(--color-charcoal-room);
}

/* Cards */
.card {
  background-color: var(--color-bg-secondary);
  border: var(--border-dark);
  border-radius: var(--radius-default);
  padding: var(--space-md);
  transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.card:hover {
  box-shadow: var(--color-shadow-hover);
  border-color: var(--color-accent-secondary);
}

.card-light {
  background-color: var(--color-bg-light);
  border: var(--border-light);
  color: var(--color-text-on-light);
}

.card-light:hover {
  box-shadow: var(--color-shadow-hover);
  border-color: var(--color-accent-secondary);
}

/* Section spacing */
.section {
  padding-block: var(--space-xl);
}

@media (min-width: 768px) {
  .section {
    padding-block: var(--space-2xl);
  }
}

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

@media (min-width: 768px) {
  .section-tight {
    padding-block: var(--space-xl);
  }
}

/* Surface backgrounds */
.bg-dark {
  background-color: var(--color-bg-primary);
  color: var(--color-text-on-dark);
}

.bg-mid {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-on-dark);
}

.bg-light {
  background-color: var(--color-bg-light);
  color: var(--color-text-on-light);
}

.bg-light-warm {
  background-color: var(--color-bg-light-warm);
  color: var(--color-text-on-light);
}

/* Text utilities */
.text-caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
  letter-spacing: var(--tracking-caption);
}

.text-nav {
  font-size: var(--text-nav);
  line-height: var(--leading-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
}

.text-muted {
  opacity: 0.7;
}

/* Image overlay */
.image-overlay {
  position: relative;
}

.image-overlay::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(11, 31, 42, 0.85), rgba(11, 31, 42, 0.2) 55%, rgba(11, 31, 42, 0.35));
  pointer-events: none;
  border-radius: inherit;
}

/* Flex utilities */
.flex {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  min-width: 0;
}

.flex > * {
  min-width: 0;
  flex-shrink: 1;
}

.flex-nowrap {
  flex-wrap: nowrap;
}

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

.flex-center {
  align-items: center;
  justify-content: center;
}

.flex-between {
  align-items: center;
  justify-content: space-between;
}

.flex-start {
  align-items: flex-start;
  justify-content: flex-start;
}

.flex-end {
  align-items: flex-end;
  justify-content: flex-end;
}

.flex-gap-xs { gap: var(--space-xs); }
.flex-gap-sm { gap: var(--space-sm); }
.flex-gap-md { gap: var(--space-md); }
.flex-gap-lg { gap: var(--space-lg); }

/* Safe last-child handling */
.card > :last-child,
.panel > :last-child,
.section > :last-child,
figure > :last-child,
blockquote > :last-child,
ul:not([class]) > :last-child,
ol:not([class]) > :last-child {
  margin-block-end: 0;
}

/* Focus visibility for all interactive elements */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* Selection */
::selection {
  background-color: var(--color-accent-secondary);
  color: var(--color-mist-light);
}

/* Scrollbar (dark theme) */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-ocean-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--color-ocean-mid);
  border-radius: var(--radius-interactive);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-felt-green);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}