:root {
    --primary-color: #4f46e5; /* Indigo 600 */
    --secondary-color: #0ea5e9; /* Sky 500 */
    --accent-color: #8b5cf6; /* Violet 500 */
    --bg-main: #020617; /* Slate 950 */
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
    --text-main: #f8fafc;
    --text-muted: #cbd5e1;
    --text-dim: #64748b;
    --error: #ef4444;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', 'Inter', sans-serif;
}

body {
    background-color: var(--bg-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-main);
    overflow: hidden;
    position: relative;
    direction: rtl; /* For Arabic text */
}

/* Animated Background Shapes */
.bg-shapes {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    z-index: 0;
}

.shape {
    position: absolute;
    filter: blur(80px);
    opacity: 0.6;
    animation: float 20s infinite alternate ease-in-out;
}

.shape-1 {
    top: -10%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, var(--primary-color), transparent 70%);
    animation-delay: 0s;
}

.shape-2 {
    bottom: -20%;
    right: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--accent-color), transparent 70%);
    animation-delay: -5s;
}

.shape-3 {
    top: 40%;
    left: 50%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--secondary-color), transparent 70%);
    animation-delay: -10s;
}

@keyframes float {
    0% { transform: translate(0, 0) rotate(0deg); }
    100% { transform: translate(100px, 50px) rotate(45deg); }
}

.login-container {
    width: 100%;
    max-width: 460px;
    padding: 20px;
    z-index: 10;
    position: relative;
}

.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: 28px;
    padding: 50px 40px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    animation: cardSlideUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes cardSlideUp {
    0% { transform: translateY(60px); opacity: 0; }
    100% { transform: translateY(0); opacity: 1; }
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    width: 76px;
    height: 76px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    box-shadow: 0 10px 30px rgba(79, 70, 229, 0.4);
    font-size: 32px;
    color: white;
    transform: rotate(-10deg);
    transition: transform 0.5s ease;
}

.login-card:hover .logo {
    transform: rotate(0deg) scale(1.05);
}

.login-header h1 {
    font-size: 30px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 15px;
}

.form-group {
    margin-bottom: 24px;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    transition: color 0.3s;
}

.form-group:focus-within label {
    color: var(--secondary-color);
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    right: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-dim);
    font-size: 16px;
    transition: color 0.3s;
}

.form-group input {
    width: 100%;
    padding: 16px 45px 16px 18px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    color: var(--text-main);
    font-size: 15px;
    outline: none;
    transition: all 0.3s ease;
}

.form-group input:focus {
    border-color: var(--secondary-color);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 4px rgba(14, 165, 233, 0.15);
}

.form-group input:focus + .input-icon,
.form-group input:not(:placeholder-shown) + .input-icon {
    color: var(--secondary-color);
}

.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    font-size: 14px;
}

.remember-me {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    color: var(--text-muted);
}

.remember-me input {
    accent-color: var(--primary-color);
    width: 16px;
    height: 16px;
}

.forgot-password {
    color: var(--secondary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.forgot-password:hover {
    color: var(--text-main);
}

.login-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    border: none;
    border-radius: 16px;
    color: white;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 12px 24px rgba(79, 70, 229, 0.35);
    position: relative;
    overflow: hidden;
}

.login-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.login-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(79, 70, 229, 0.5);
}

.login-btn:hover::before {
    left: 100%;
}

.login-btn i {
    transition: transform 0.3s ease;
}

.login-btn:hover i {
    transform: translateX(-4px); /* Moves left since rtl */
}

.login-footer {
    text-align: center;
    margin-top: 32px;
    color: var(--text-dim);
    font-size: 13px;
    font-weight: 500;
}

.messages {
    margin-bottom: 24px;
}

.alert {
    padding: 14px 18px;
    border-radius: 12px;
    font-size: 14px;
    font-weight: 500;
    background: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.2);
    display: flex;
    align-items: center;
    gap: 10px;
}

@media (max-width: 480px) {
    .login-card { padding: 40px 24px; }
    .login-header h1 { font-size: 26px; }
    .logo { width: 64px; height: 64px; font-size: 28px; }
}