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

html, body {
    width: 100%;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    background: #0a0a0a;
    color: #fff;
    overflow-x: hidden;
}

.background {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0a0a0a 0%, #1a1a2e 50%, #0a0a0a 100%);
    z-index: -1;
}

.container {
    width: 100%;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.content {
    text-align: center;
    max-width: 600px;
    animation: fadeInUp 0.8s ease-out;
}

.logo {
    width: 100%;
    max-width: 400px;
    height: auto;
    margin-bottom: 3rem;
    display: block;
    filter: drop-shadow(0 10px 30px rgba(255, 23, 68, 0.3));
}

.offer-box {
    margin-bottom: 2rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: #fff;
}

h2 {
    font-size: 4rem;
    font-weight: 900;
    background: linear-gradient(135deg, #ff1744 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -1px;
}

h3 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffd700;
}

.subtitle {
    font-size: 1.3rem;
    color: #bbb;
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.btn-deposit {
    width: 100%;
    max-width: 400px;
    padding: 1.5rem;
    background: linear-gradient(135deg, #ff1744 0%, #d01040 100%);
    color: white;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 15px 40px rgba(255, 23, 68, 0.4);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.3rem;
    margin: 0 auto 1.5rem;
}

.btn-text {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 1px;
}

.btn-sub {
    font-size: 0.9rem;
    font-weight: 600;
    opacity: 0.9;
}

.btn-deposit:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 50px rgba(255, 23, 68, 0.6);
}

.btn-deposit:active {
    transform: translateY(-1px);
}

.promo-date {
    font-size: 0.95rem;
    color: #888;
    letter-spacing: 0.5px;
}

/* Popup */
.popup {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 10000;
    animation: fadeIn 0.3s ease-out;
}

.popup.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.popup-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    cursor: pointer;
}

.popup-box {
    position: relative;
    z-index: 10001;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
    padding: 2.5rem;
    border-radius: 16px;
    max-width: 450px;
    width: 90%;
    border: 1px solid #ff1744;
    box-shadow: 0 20px 60px rgba(255, 23, 68, 0.3);
    animation: slideUp 0.4s ease-out;
}

.popup-box h2 {
    font-size: 1.8rem;
    color: #ff1744;
    margin-bottom: 1.5rem;
    background: none;
    -webkit-background-clip: unset;
    -webkit-text-fill-color: unset;
    background-clip: unset;
}

.popup-main {
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.popup-main strong {
    background: linear-gradient(135deg, #ff1744 0%, #ff5252 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.popup-sub {
    font-size: 1rem;
    color: #bbb;
    margin-bottom: 2rem;
    line-height: 1.5;
}

.btn-confirm {
    width: 100%;
    padding: 1.2rem;
    background: linear-gradient(135deg, #ff1744 0%, #d01040 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 800;
    font-size: 1.1rem;
    cursor: pointer;
    margin-bottom: 1rem;
    transition: all 0.3s;
    box-shadow: 0 10px 30px rgba(255, 23, 68, 0.3);
}

.btn-confirm:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 23, 68, 0.5);
}

.btn-cancel {
    width: 100%;
    padding: 1.2rem;
    background: transparent;
    color: #bbb;
    border: 1px solid #444;
    border-radius: 10px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: #666;
    color: #fff;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 3rem;
    }
    
    h3 {
        font-size: 2rem;
    }
    
    .logo {
        max-width: 300px;
        margin-bottom: 2rem;
    }
    
    .subtitle {
        font-size: 1.1rem;
    }
    
    .btn-text {
        font-size: 1.1rem;
    }
    
    .popup-box {
        padding: 2rem;
    }
    
    .popup-main {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 2.5rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    .logo {
        max-width: 250px;
    }
}