:root {
    --primary-color: #6c5ce7;
    --secondary-color: #a29bfe;
    --accent-color: #fd79a8;
    --text-color: #2d3436;
    --bg-color: #f9f9f9;
    --glass-color: rgba(255, 255, 255, 0.2);
    --glass-border: rgba(255, 255, 255, 0.3);
    --shadow: 0 8px 32px rgba(31, 38, 135, 0.15);
    --transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

[data-theme="dark"] {
    --primary-color: #a55eea;
    --secondary-color: #8854d0;
    --accent-color: #fd79a8;
    --text-color: #f9f9f9;
    --bg-color: #1e272e;
    --glass-color: rgba(30, 39, 46, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Vazir', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background: linear-gradient(135deg, var(--bg-color), #dfe6e9);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
    transition: var(--transition);
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: url('https://assets.codepen.io/3364143/particles.gif') center/cover;
    opacity: 0.3;
}

.light-beam {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, 
        rgba(108, 92, 231, 0.1) 0%, 
        transparent 70%);
    z-index: -1;
    animation: rotateBeam 60s linear infinite;
}

.container {
    width: 100%;
    max-width: 500px;
    padding: 20px;
    perspective: 1000px;
}

.theme-toggle {
    position: fixed;
    top: 20px;
    left: 20px;
    background: var(--glass-color);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    color: var(--text-color);
    font-size: 1.2rem;
    z-index: 100;
    transition: var(--transition);
    box-shadow: var(--shadow);
}

.theme-toggle:hover {
    transform: scale(1.1);
    color: var(--accent-color);
}

.card {
    width: 100%;
    background: var(--glass-color);
    backdrop-filter: blur(16px);
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    padding: 30px;
    box-shadow: var(--shadow);
    transform-style: preserve-3d;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to bottom right,
        transparent 0%,
        transparent 50%,
        var(--primary-color) 100%
    );
    opacity: 0.1;
    transform: rotate(30deg);
    animation: shine 8s infinite;
}

@keyframes shine {
    0% { transform: rotate(30deg) translate(-30%, -30%); }
    100% { transform: rotate(30deg) translate(30%, 30%); }
}

.panel {
    display: none;
    animation: fadeIn 0.6s forwards;
}

.panel.active {
    display: block;
}

.form {
    width: 100%;
}

.form-header {
    text-align: center;
    margin-bottom: 30px;
    position: relative;
}

.form-header h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.form-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 2rem;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
    transition: var(--transition);
}

.input-group {
    position: relative;
    margin-bottom: 25px;
}

.input-group i {
    position: absolute;
    top: 50%;
    right: 15px;
    width: 30px;
    transform: translateY(-50%);
    color: var(--primary-color);
    transition: var(--transition);
}

.input-group input {
    width: 100%;
    padding: 15px 45px 15px 15px;
    background: var(--glass-color);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    font-size: 1rem;
    color: var(--text-color);
    transition: var(--transition);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.input-group input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.2);
}

.input-group input:focus + i {
    color: var(--accent-color);
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    transition: var(--transition);
}

.input-group input:focus ~ .focus-border {
    width: 100%;
}

.toggle-password {
    left: 15px;
    right: 100px;
    cursor: pointer;
    z-index: 2;
    color: var(--text-color);
    opacity: 0.7;
}

.toggle-password:hover {
    opacity: 1;
    color: var(--accent-color);
}

.forgot-link {
    display: block;
    text-align: left;
    margin: -10px 0 20px;
    color: var(--secondary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.forgot-link:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

.btn {
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.btn.glass {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.btn.glass:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(108, 92, 231, 0.6);
}

.btn.glass:active {
    transform: translateY(0);
}

.btn.glass::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
}

.btn.glass:hover::before {
    opacity: 1;
}

.btn i {
    margin-left: 8px;
}
.fa-eye{
    margin-right: 85%;
}
.fa-eye-slash{
    margin-right: 85%;
}
.form-footer {
    text-align: center;
    margin-top: 25px;
}

.form-footer p {
    color: var(--text-color);
    opacity: 0.8;
}

.switch-link {
    color: var(--primary-color);
    font-weight: bold;
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.switch-link:hover {
    color: var(--accent-color);
}

.switch-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.switch-link:hover::after {
    width: 100%;
}

.error-message {
    color: #ff4757;
    font-size: 0.9rem;
    margin-top: 10px;
    text-align: center;
    animation: shake 0.5s;
}

.welcome-panel {
    text-align: center;
    padding: 30px;
}

.welcome-content {
    animation: fadeInUp 0.8s;
}

.welcome-panel h2 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logout-btn {
    width: auto;
    padding: 12px 30px;
    margin-top: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(40px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-5px); }
    40%, 80% { transform: translateX(5px); }
}

@keyframes rotateBeam {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}


@media (max-width: 768px) {
    .card {
        padding: 20px;
    }
    
    .form-header h2 {
        font-size: 1.8rem;
    }
    
    .form-icon {
        width: 70px;
        height: 70px;
        font-size: 1.8rem;
    }
}