@import url('https://fonts.googleapis.com/css2?family=Tajawal:wght@400;500;700;900&display=swap');
:root {
    --bg-light: #F8F9FA; --text-dark: #212529; --text-muted: #6C757D; --white: #FFFFFF;
    --gradient-start: #007BFF; --gradient-end: #00C6FF; --error-color: #dc3545; --success-color: #28a745;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Tajawal', sans-serif; background-color: var(--bg-light); color: var(--text-dark);
    display: flex; justify-content: center; align-items: center; min-height: 100vh; overflow: hidden; direction: rtl;
}
#background-animation {
    position: fixed; top: 0; left: 0; width: 100%; height: 100%;
    background: linear-gradient(45deg, #eef9ff, #f8f9fa, #e6f7ff);
    background-size: 400% 400%; animation: gradient-bg 15s ease infinite; z-index: -1;
}
@keyframes gradient-bg { 0% {background-position: 0% 50%;} 50% {background-position: 100% 50%;} 100% {background-position: 0% 50%;} }
.auth-container {
    position: relative; width: 90%; max-width: 450px; padding: 50px 40px;
    background: rgba(255, 255, 255, 0.85); backdrop-filter: blur(15px); -webkit-backdrop-filter: blur(15px);
    border-radius: 25px; border: 1px solid rgba(255, 255, 255, 0.2); box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1); text-align: center;
}
.auth-header { margin-bottom: 30px; }
.brand-title {
    font-size: 1.8rem; font-weight: 900;
    background: linear-gradient(90deg, #ff007f, #00f2ff, #ff9a00, #f200ff, #ff007f);
    background-size: 300% 100%; -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
    animation: super-shine 6s linear infinite; margin-bottom: 10px;
}
@keyframes super-shine { to { background-position: 300% center; } }
.welcome-message { font-size: 1.1rem; font-weight: 500; color: var(--text-muted); }
.form-group { position: relative; margin-bottom: 25px; }
.form-input {
    width: 100%; padding: 15px 45px 15px 15px; border: 1px solid #ced4da; border-radius: 12px;
    background-color: #f1f3f5; font-family: 'Tajawal', sans-serif; font-size: 1rem; transition: all 0.3s ease;
}
.form-input:focus { outline: none; border-color: var(--gradient-start); background-color: var(--white); box-shadow: 0 0 0 4px rgba(0, 123, 255, 0.15); }
.form-icon { position: absolute; top: 50%; right: 15px; transform: translateY(-50%); color: #adb5bd; transition: color 0.3s ease; }
.form-input:focus + .form-icon { color: var(--gradient-start); }
.submit-btn {
    width: 100%; padding: 16px; font-size: 1.2rem; font-weight: 700; cursor: pointer; color: var(--white);
    border: none; border-radius: 12px; background: linear-gradient(45deg, var(--gradient-start), var(--gradient-end));
    box-shadow: 0 10px 25px rgba(0, 123, 255, 0.25); transition: all 0.3s ease;
}
.submit-btn:hover { transform: translateY(-3px); box-shadow: 0 15px 30px rgba(0, 123, 255, 0.35); }
.switch-auth { margin-top: 30px; font-size: 0.95rem; }
.switch-auth a { color: var(--gradient-start); text-decoration: none; font-weight: 700; }
.message { padding: 15px; margin-bottom: 20px; border-radius: 10px; font-weight: 500; text-align: center; }
.message.error { background-color: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.message.success { background-color: #d4edda; color: #155724; border: 1px solid #c3e6cb; }