/* ========== متغيرات الثيم ========== */
:root {
  --clr-bg: #f0f4f8;
  --clr-card: #ffffff;
  --clr-primary: #34495e;
  --clr-accent: #009688;
  --clr-text: #2c3e50;
  --clr-subtext: #666;
  --clr-error-bg: #ffefef;
  --clr-error-border: #e0b4b4;
  --radius: 10px;
  --transition: 0.3s ease;
  --shadow-light: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 6px 18px rgba(0, 0, 0, 0.1);
}

/* ========== الخطوط والأساسيات ========== */
body {
  font-family: 'Times New Roman', serif;
  background-color: var(--clr-bg);
  color: var(--clr-text);
  direction: rtl;
  text-align: center;
  margin: 0;
  padding: 0;
  line-height: 1.6;
}
.container {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* ========== الرأس ========== */
header {
  margin-bottom: 2rem;
}
header img {
  max-width: 120px;
  margin-bottom: 0.5rem;
  transition: transform var(--transition);
}
header img:hover {
  transform: scale(1.05);
}
header h1 {
  font-size: 2.2rem;
  color: var(--clr-primary);
  margin: 0.5rem 0;
}
.subtitle {
  font-size: 1rem;
  color: var(--clr-subtext);
  margin-bottom: 2rem;
}

/* ========== النموذج ========== */
form {
  background: var(--clr-card);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-light);
  transition: box-shadow var(--transition);
}
form:hover {
  box-shadow: var(--shadow-hover);
}
form label {
  display: block;
  margin: 1rem 0 0.5rem;
  font-weight: bold;
  text-align: right;
  color: var(--clr-primary);
}
input[type="text"],
input[type="datetime-local"] {
  box-sizing: border-box;
  width: 100%;
  padding: 0.8rem;
  margin-top: 0.25rem;
  border: 1px solid #ccc;
  border-radius: var(--radius);
  font-size: 1rem;
  text-align: center;
  transition: border-color var(--transition), box-shadow var(--transition);
}
input[type="text"]:focus,
input[type="datetime-local"]:focus {
  outline: none;
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(0, 150, 136, 0.2);
}

/* ========== الأزرار ========== */
button {
  display: inline-block;
  background-color: var(--clr-accent);
  color: #fff;
  border: none;
  padding: 0.9rem 1.5rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.1rem;
  margin-top: 1.5rem;
  transition: background-color var(--transition), transform var(--transition);
}
button:hover {
  background-color: #00796b;
  transform: translateY(-2px);
}
button:active {
  transform: translateY(0);
}

/* ========== نتيجة العداد ========== */
#resultSection {
  background: var(--clr-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-light);
  margin-top: 1.5rem;
}
#displayEventName {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--clr-primary);
}
.countdown-box {
  display: inline-block;
  background: var(--clr-accent);
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  font-size: 1.6rem;
  font-weight: bold;
  transition: background-color var(--transition);
}
.countdown-box:hover {
  background-color: #00796b;
}

/* ========== الرسائل ========== */
.message {
  background-color: var(--clr-error-bg);
  color: var(--clr-text);
  padding: 0.8rem 1rem;
  margin-top: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--clr-error-border);
  font-weight: bold;
  display: inline-block;
  transition: transform var(--transition);
}
.message:hover {
  transform: scale(1.02);
}
.message::before {
  content: "⚠️ ";
  margin-left: 0.5rem;
}

/* ========== التذييل ========== */
footer {
  margin-top: 2rem;
  font-size: 0.95rem;
  color: var(--clr-subtext);
}
footer a {
  color: var(--clr-accent);
  text-decoration: none;
  font-weight: bold;
  transition: color var(--transition);
}
footer a:hover {
  color: #00796b;
}

/* ========== استجابة الموبايل ========== */
@media (max-width: 480px) {
  header h1 { font-size: 1.8rem; }
  .subtitle { font-size: 0.95rem; }
  form { padding: 1rem; }
  input[type="text"],
  input[type="datetime-local"] { font-size: 0.9rem; }
  button { width: 100%; font-size: 1rem; padding: 0.8rem 1rem; }
  #displayEventName { font-size: 1.3rem; }
  .countdown-box { font-size: 1.4rem; }
}