/* =========================
   Google Fonts
========================= */

@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=Inter:wght@400;500;600&family=Special+Elite&display=swap");

/* =========================
   CSS Variables
========================= */

:root {
  --background-color: #30271f;
  --background-light: #44372c;

  --paper-color: #f4ead1;
  --paper-light: #fffaf0;
  --paper-dark: #d8c7a4;

  --ink-color: #29231d;
  --muted-ink-color: #716451;

  --accent-color: #9b3a32;
  --accent-hover-color: #ad493f;
  --accent-dark-color: #6f2823;

  --border-color: #786c5c;
  --focus-color: rgba(155, 58, 50, 0.18);

  --heading-font: "Special Elite", serif;
  --interface-font: "IBM Plex Mono", monospace;
  --body-font: "Inter", sans-serif;

  --small-radius: 4px;
  --medium-radius: 8px;
  --large-radius: 12px;

  --page-width: 960px;
}

/* =========================
   CSS Reset
========================= */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
}

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

/* =========================
   Page Layout
========================= */

body {
  min-height: 100vh;
  padding: 48px 20px 24px;
  color: var(--ink-color);
  font-family: var(--body-font);
  background:
    radial-gradient(
      circle at top left,
      rgba(255, 255, 255, 0.06),
      transparent 35%
    ),
    linear-gradient(135deg, var(--background-light), var(--background-color));
}

main {
  width: min(var(--page-width), 100%);
  margin: 0 auto;
}

/* =========================
   Header
========================= */

header {
  width: min(var(--page-width), 100%);
  margin: 0 auto 32px;
  color: var(--paper-light);
  text-align: center;
}

header h1 {
  margin: 0 0 14px;
  font-family: var(--heading-font);
  font-size: clamp(2.5rem, 7vw, 4.8rem);
  font-weight: 400;
  letter-spacing: 4px;
  line-height: 1.1;
  text-transform: uppercase;
  text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.2);
}

header p {
  max-width: 620px;
  margin: 0 auto;
  color: #ded2bd;
  font-family: var(--interface-font);
  font-size: 1rem;
  line-height: 1.7;
}

/* =========================
   Message Form
========================= */

main section {
  position: relative;
  padding: 42px;
  border: 2px solid var(--paper-dark);
  border-radius: var(--medium-radius);
  background:
    repeating-linear-gradient(
      transparent,
      transparent 31px,
      rgba(72, 61, 47, 0.07) 32px
    ),
    var(--paper-color);
  box-shadow:
    0 20px 40px rgba(20, 14, 10, 0.35),
    inset 0 0 40px rgba(120, 95, 55, 0.08);
}

main section::before {
  position: absolute;
  top: -13px;
  left: 50%;
  width: 170px;
  height: 26px;
  background: rgba(211, 191, 151, 0.78);
  box-shadow: 0 3px 6px rgba(50, 35, 20, 0.18);
  content: "";
  transform: translateX(-50%) rotate(-1deg);
}

section h2 {
  margin: 0 0 32px;
  font-family: var(--heading-font);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 400;
  line-height: 1.3;
  text-align: center;
}

/* =========================
   Form Layout
========================= */

form {
  display: grid;
  gap: 24px;
}

form > div {
  display: grid;
  gap: 9px;
}

label {
  color: var(--ink-color);
  font-family: var(--interface-font);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* =========================
   Form Elements
========================= */

input,
select,
textarea {
  width: 100%;
  border: 0;
  border-bottom: 2px solid var(--border-color);
  border-radius: 0;
  outline: none;
  color: var(--ink-color);
  font-family: var(--interface-font);
  background: rgba(255, 250, 240, 0.4);
  transition:
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease,
    transform 180ms ease;
}

input,
select {
  min-height: 52px;
  padding: 13px 12px;
}

textarea {
  min-height: 230px;
  padding: 16px;
  border: 2px solid var(--border-color);
  border-radius: var(--small-radius);
  line-height: 1.8;
  resize: vertical;
  background:
    repeating-linear-gradient(
      transparent,
      transparent 30px,
      rgba(74, 63, 49, 0.11) 31px
    ),
    rgba(255, 250, 240, 0.6);
  box-shadow: inset 2px 2px 6px rgba(65, 49, 31, 0.08);
}

input::placeholder,
textarea::placeholder {
  color: var(--muted-ink-color);
  opacity: 0.85;
}

input:hover,
select:hover,
textarea:hover {
  background-color: rgba(255, 252, 243, 0.7);
}

input:focus,
select:focus {
  border-bottom-color: var(--accent-color);
  box-shadow: 0 4px 0 var(--focus-color);
  transform: translateY(-1px);
}

textarea:focus {
  border-color: var(--accent-color);
  box-shadow:
    inset 2px 2px 6px rgba(65, 49, 31, 0.08),
    0 0 0 4px var(--focus-color);
  transform: translateY(-1px);
}

/* =========================
   Generate Button
========================= */

#generate-button {
  width: 100%;
  min-height: 58px;
  padding: 14px 22px;
  border: 2px solid #4d1b17;
  border-radius: var(--small-radius);
  color: #fff9eb;
  font-family: var(--heading-font);
  font-size: 1.2rem;
  letter-spacing: 1.4px;
  cursor: pointer;
  background: var(--accent-color);
  box-shadow:
    0 7px 0 var(--accent-dark-color),
    0 12px 18px rgba(62, 23, 18, 0.25);
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    background-color 180ms ease;
}

#generate-button:hover {
  background: var(--accent-hover-color);
  transform: translateY(-3px);
  box-shadow:
    0 10px 0 var(--accent-dark-color),
    0 16px 22px rgba(62, 23, 18, 0.28);
}

#generate-button:active {
  transform: translateY(5px);
  box-shadow:
    0 2px 0 var(--accent-dark-color),
    0 5px 8px rgba(62, 23, 18, 0.22);
}

#generate-button:focus-visible {
  outline: 3px dashed var(--paper-light);
  outline-offset: 5px;
}

/* =========================
   Generated Message
========================= */

.result-section {
  margin-top: 34px;
}

.result-section::before {
  transform: translateX(-50%) rotate(1deg);
}

.result-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 26px;
}

.result-header h2 {
  margin: 0;
  text-align: left;
}

#message-result {
  min-height: 220px;
  padding: 24px;
  border: 2px solid var(--border-color);
  border-radius: var(--small-radius);
  color: var(--ink-color);
  font-family: var(--interface-font);
  line-height: 1.9;
  white-space: pre-wrap;
  background:
    repeating-linear-gradient(
      transparent,
      transparent 30px,
      rgba(74, 63, 49, 0.1) 31px
    ),
    rgba(255, 250, 240, 0.72);
  box-shadow: inset 2px 2px 8px rgba(65, 49, 31, 0.08);
}

/* =========================
   Copy Button
========================= */

#copy-button {
  flex-shrink: 0;
  min-height: 42px;
  padding: 9px 16px;
  border: 2px solid var(--accent-dark-color);
  border-radius: var(--small-radius);
  color: var(--accent-dark-color);
  font-family: var(--interface-font);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  cursor: pointer;
  background: transparent;
  box-shadow: 0 4px 0 rgba(111, 40, 35, 0.25);
  transition:
    transform 120ms ease,
    box-shadow 120ms ease,
    color 180ms ease,
    background-color 180ms ease;
}

#copy-button:hover {
  color: #fff9eb;
  background: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 6px 0 var(--accent-dark-color);
}

#copy-button:active {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--accent-dark-color);
}

@media (max-width: 650px) {
  .result-header {
    align-items: stretch;
    flex-direction: column;
  }

  .result-header h2 {
    text-align: center;
  }

  #copy-button {
    width: 100%;
  }
}

/* =========================
   Footer
========================= */

footer {
  margin-top: 30px;
  color: #d7c9b1;
  font-family: var(--interface-font);
  font-size: 0.9rem;
  text-align: center;
}

footer p {
  margin: 0;
}

/* =========================
   Responsive Design
========================= */

@media (max-width: 650px) {
  body {
    padding: 32px 14px 20px;
  }

  header {
    margin-bottom: 26px;
  }

  header h1 {
    letter-spacing: 2px;
  }

  main section {
    padding: 34px 20px 26px;
  }

  main section::before {
    width: 125px;
  }

  section h2 {
    margin-bottom: 26px;
  }

  textarea {
    min-height: 200px;
  }
}