/* =================================================================
   ShareMyPlanner — design tokens
   A calendar app should feel like a well-kept paper planner: warm
   parchment, ledger ink, a stamped accent, and a mono face for the
   numbers you actually schedule around.
   ================================================================= */

:root {
  /* Color */
  --paper:        #EFEAE0;
  --paper-raised: #FBF9F4;
  --ink:          #1F2A22;
  --ink-soft:     #55625A;
  --ink-faint:    #8A8F84;
  --forest:       #3D5A47;
  --forest-dark:  #26382D;
  --rust:         #C65D3B;
  --rust-dark:    #A34A2C;
  --line:         #DCD5C4;
  --line-strong:  #C7BEA8;
  --white:        #FFFFFF;

  /* Event color-coding palette */
  --ev-rust:   #C65D3B;
  --ev-ochre:  #C9972B;
  --ev-teal:   #2F7A76;
  --ev-plum:   #6B4E8E;
  --ev-forest: #3D5A47;
  --ev-slate:  #3E5266;

  /* Type */
  --font-display: "Fraunces", "Iowan Old Style", serif;
  --font-body: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, monospace;

  /* Layout */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --shadow-card: 0 1px 2px rgba(31,42,34,0.06), 0 8px 24px -12px rgba(31,42,34,0.18);
  --shadow-raised: 0 2px 4px rgba(31,42,34,0.08), 0 16px 40px -16px rgba(31,42,34,0.28);
  --max-width: 1180px;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink);
  margin: 0 0 0.4em;
  font-weight: 600;
  letter-spacing: -0.01em;
}

p { margin: 0 0 1em; color: var(--ink-soft); }

a { color: var(--forest); text-decoration: none; }
a:hover { text-decoration: underline; }

img, svg { max-width: 100%; display: block; }

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 28px;
}

.mono { font-family: var(--font-mono); }

/* Buttons -------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 22px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease, background-color 0.12s ease, border-color 0.12s ease;
  text-decoration: none;
  line-height: 1;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: 2px solid var(--forest);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--forest);
  color: var(--white);
  box-shadow: 0 1px 0 rgba(0,0,0,0.05);
}
.btn-primary:hover { background: var(--forest-dark); }

.btn-rust {
  background: var(--rust);
  color: var(--white);
}
.btn-rust:hover { background: var(--rust-dark); }

.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink);
}
.btn-ghost:hover { background: rgba(31,42,34,0.04); }

.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-block { width: 100%; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

/* Forms ------------------------------------------------------------ */
label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--ink-soft);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
input[type="time"],
input[type="number"],
select,
textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--ink);
  background: var(--white);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-sm);
  padding: 11px 13px;
}
input:focus, select:focus, textarea:focus {
  outline: 2px solid var(--forest);
  outline-offset: 1px;
  border-color: var(--forest);
}
textarea { resize: vertical; font-family: var(--font-body); }

.field { margin-bottom: 18px; }
.field-hint { font-size: 12px; color: var(--ink-faint); margin-top: 6px; }
.field-error {
  font-size: 13px;
  color: var(--rust-dark);
  margin-top: 6px;
}

/* Cards -------------------------------------------------------------*/
.card {
  background: var(--paper-raised);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

/* Utility ----------------------------------------------------------*/
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* Language switcher ------------------------------------------------- */
.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 3px;
}
.lang-switch a {
  padding: 3px 9px;
  border-radius: 999px;
  color: var(--ink-faint);
  text-decoration: none;
  letter-spacing: 0.02em;
}
.lang-switch a:hover { color: var(--ink); text-decoration: none; }
.lang-switch a.active {
  background: var(--forest);
  color: var(--white);
}

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}