/* ========== GLOBAL ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary: #e11d48;
  --primary-soft: rgba(225, 29, 72, 0.08);
  --dark: #0f172a;
  --text: #111827;
  --muted: #6b7280;
  --border: #e5e7eb;
  --bg: #f3f4f6;
  --white: #ffffff;
  --radius-md: 12px;
  --radius-lg: 18px;
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.14);
  --transition-fast: 0.2s ease-in-out;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #fee2e2 0, #f3f4f6 40%, #e5e7eb 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 12px;
}

/* ========== SHARED INPUT / BUTTON ========== */

input,
button {
  font-family: inherit;
}

input,
button {
  width: 100%;
  padding: 10px 12px;
  margin-top: 5px;
  margin-bottom: 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  font-size: 14px;
  box-sizing: border-box;
  resize: vertical;
}

input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 1px rgba(225, 29, 72, 0.2);
}

/* ========== CONTAINER ========== */

#container {
  width: 100%;
  max-width: 960px;
  display: flex;
  gap: 0;
  background-color: transparent;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

/* ========== LEFT PANEL (#black) ========== */

#black {
  width: 50%;
  background: radial-gradient(circle at top left, #f97316 0, #facc15 38%, #fef3c7 100%);
  color: #111827;
  padding: 34px 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

#logo {
  width: 70%;
  margin: 0 auto 28px auto;
}

#logo img {
  width: 100%;
  display: block;
}

#black h1 {
  font-size: 24px;
  line-height: 1.3;
  margin-bottom: 10px;
}

#black p {
  font-size: 13px;
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

#black h3 {
  font-size: 14px;
  margin-bottom: 8px;
}

/* ========== RIGHT PANEL (#white) ========== */

#white {
  width: 50%;
  background-color: var(--white);
  padding-top: 10px;
  position: relative;
}

/* close button */
#hide {
  width: 40px;
  height: 40px;
  margin-left: auto;
  margin-right: 12px;
  margin-top: 8px;
  border-radius: 999px;
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast), transform var(--transition-fast);
}

#hide:hover {
  background: #f3f4f6;
  color: var(--primary);
  transform: translateY(-1px);
}

/* form box */
form {
  width: 80%;
  margin: 0 auto 26px auto;
  margin-top: 10%;
  font-weight: 500;
}

form h2 {
  font-size: 22px;
  margin-bottom: 18px;
}

form label {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  margin-top: 4px;
  color: var(--dark);
}

form input[type="text"],
form input[type="email"],
form input[type="password"] {
  border-radius: 10px;
  background-color: #f9fafb;
  border: 1px solid var(--border);
  transition: border var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

form input[type="text"]:focus,
form input[type="email"]:focus,
form input[type="password"]:focus {
  background: #fdf2f8;
}

/* password eye icon wrapper is inline on HTML, just let it be */
#eye {
  font-size: 14px;
}

/* submit button */
form input[type="submit"] {
  border-radius: 999px;
  border: none;
  background: var(--primary);
  color: #ffffff;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  font-weight: 700;
  margin-top: 10px;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

form input[type="submit"]:hover {
  background: #be123c;
  transform: translateY(-1px);
  box-shadow: var(--shadow-soft);
}

form h3 {
  text-align: left;
  font-size: 13px;
  margin-top: 10px;
  color: var(--muted);
}

form h3 a {
  color: var(--dark);
  font-weight: 600;
  border-bottom: 1px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

form h3 a:hover {
  color: var(--primary);
  border-color: var(--primary);
}

/* ========== RESPONSIVE ========== */

/* Tablets and down */
@media (max-width: 900px) {
  #container {
    max-width: 720px;
  }

  #black {
    padding: 24px 18px;
  }

  form {
    width: 85%;
  }
}

/* Mobile */
@media (max-width: 700px) {
  body {
    padding: 20px 10px;
  }

  #container {
    flex-direction: column;
    max-width: 480px;
    border-radius: var(--radius-lg);
  }

  #black {
    width: 100%;
    text-align: left;
    padding: 24px 20px;
  }

  #white {
    width: 100%;
  }

  form {
    width: 88%;
    margin-top: 20px;
  }
}

/* Extra small */
@media (max-width: 480px) {
  #black h1 {
    font-size: 20px;
  }

  #black h3 {
    font-size: 13px;
  }

  form h2 {
    font-size: 20px;
  }
}