:root {
    
    --primary-color: #e83e8c;
    --primary-dark: #c2185b;
    --primary-light: #f8bbd9;
    --secondary-color: #212529;
    --secondary-light: #424242;
    --accent-color: #00bcd4;
    --text-color: #333333;
    --text-secondary: #666666;
    --bg-color: #ffffff;
    --card-bg: #f8f9fa;
    --header-bg: #e9ecef;
    --border-color: #dee2e6;
    --shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}


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

html, body {
    height: 100%;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
}

a {
    text-decoration: none;
    color: inherit;
}


.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


header {
    background-color: var(--header-bg);
    padding: 20px 0;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-color);
}


.back-btn {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    padding: 8px 20px;
    border-radius: 30px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.back-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 188, 212, 0.3);
}


.main-content {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 0;
    width: 100%;
}


footer {
    background-color: var(--header-bg);
    padding: 30px 0;
    text-align: center;
    margin-top: 40px;
    width: 100%;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--card-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--primary-color);
}

.social-link:hover {
    background-color: var(--primary-color);
    transform: translateY(-5px);
    color: white;
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}


.modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: background-color 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1), visibility 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal.active {
    display: flex;
    opacity: 1;
    visibility: visible;
    background-color: rgba(0, 0, 0, 0.85);
}

.modal-content {
    background-color: #16213e;
    border-radius: 15px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    position: relative;
    box-shadow: 0 15px 40px rgba(0,0,0,0.4), 0 0 30px rgba(255,255,255,0.1);
    transform: scale(0.85) translateY(20px);
    opacity: 0;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(255,255,255,0.1);
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
    opacity: 1;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5), 0 0 40px rgba(255,255,255,0.15);
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 1.5rem;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: none;
    border: none;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255,255,255,0.1);
}

.modal-close:hover {
    color: #fff;
    transform: rotate(90deg) scale(1.1);
    background-color: rgba(255,255,255,0.2);
}

.modal-title {
    font-size: 1.8rem;
    margin-bottom: 25px;
    text-align: center;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-shadow: 0 0 10px rgba(255,255,255,0.3);
}


.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #aaa;
}

.form-control {
    width: 100%;
    padding: 15px;
    background-color: #0f3460;
    border: 1px solid #333;
    border-radius: 8px;
    color: #fff;
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: #00d9ff;
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.2);
}


.btn {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 30px;
    border-radius: 30px;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    overflow: hidden;
    font-size: 0.9rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn:hover {
    opacity: 1;
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 12px 25px rgba(0, 0, 0, 0.3);
}

.btn:active {
    transform: translateY(-2px) scale(0.98);
    box-shadow: 0 6px 15px rgba(0, 0, 0, 0.25);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), height 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn:hover::before {
    width: 200px;
    height: 200px;
}

.btn:active::before {
    width: 400px;
    height: 400px;
}

.btn-secondary {
    background-color: transparent;
    border: 2px solid #6c757d;
    color: #6c757d;
}

.btn-secondary:hover {
    background-color: #6c757d;
    color: white;
}


.modal-content form .btn {
    display: block;
    width: 100%;
    margin-top: 15px;
}

.modal-content > .btn {
    display: block;
    width: 100%;
    margin: 20px auto 0;
}


.decoration {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-top: 30px;
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color);
    opacity: 0.6;
}

.dot:nth-child(2) {
    animation: pulse 2s infinite 0.3s;
}

.dot:nth-child(3) {
    animation: pulse 2s infinite 0.6s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}


@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}


@media (max-width: 768px) {
    .logo {
        font-size: 1.5rem;
    }
    
    .modal-content {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .logo {
        font-size: 1.3rem;
    }
    
    .back-btn {
        padding: 6px 15px;
        font-size: 0.9rem;
    }
}