/* ============================================================
   GO PLUS - ESTILOS WEB
   ============================================================ */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0F0F1A;
    color: #E0E0E0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-image: url('../images/background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 15, 26, 0.85);
    z-index: 0;
}

.container {
    position: relative;
    z-index: 1;
    max-width: 440px;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    padding: 35px 30px;
    border-radius: 16px;
    border: 1px solid rgba(42, 42, 62, 0.8);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.5s ease-out;
}

.logo { text-align: center; margin-bottom: 25px; }
.logo img { max-height: 60px; margin-bottom: 10px; }
.logo h1 { color: #4CAF50; font-size: 28px; font-weight: 700; }
.logo p { color: #888; font-size: 14px; margin-top: 4px; }

.code-box {
    background: rgba(15, 15, 26, 0.7);
    border-radius: 12px;
    padding: 18px;
    text-align: center;
    margin-bottom: 25px;
    border: 1px solid rgba(42, 42, 62, 0.6);
    transition: all 0.3s ease;
}
.code-box:hover { border-color: rgba(76, 175, 80, 0.3); }
.code-box .label { color: #888; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 5px; }
.code-box .code { font-family: 'Courier New', monospace; font-size: 32px; font-weight: 700; color: #4CAF50; letter-spacing: 4px; }
.code-box .sub { color: #666; font-size: 12px; margin-top: 8px; }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; margin-bottom: 6px; color: #aaa; font-size: 13px; font-weight: 500; }
.form-group input {
    width: 100%;
    padding: 12px 14px;
    background: rgba(15, 15, 26, 0.7);
    border: 1px solid rgba(42, 42, 62, 0.6);
    border-radius: 10px;
    color: #E0E0E0;
    font-size: 14px;
    transition: all 0.3s ease;
}
.form-group input:focus {
    outline: none;
    border-color: #4CAF50;
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.15);
}
.form-group input::placeholder { color: #444; }

.btn {
    width: 100%;
    padding: 13px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.btn-primary {
    background: linear-gradient(135deg, #4CAF50, #388E3C);
    color: white;
    box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3);
}
.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(76, 175, 80, 0.4);
}
.btn-outline {
    background: transparent;
    color: #4CAF50;
    border: 1px solid #4CAF50;
}
.btn-outline:hover { background: rgba(76, 175, 80, 0.1); transform: translateY(-2px); }

.alert {
    padding: 14px 16px;
    border-radius: 10px;
    margin-bottom: 18px;
    font-size: 14px;
    border-left: 4px solid transparent;
}
.alert-success { background: rgba(76, 175, 80, 0.12); border-left-color: #4CAF50; color: #4CAF50; }
.alert-error { background: rgba(244, 67, 54, 0.12); border-left-color: #F44336; color: #F44336; }
.alert-warning { background: rgba(255, 152, 0, 0.12); border-left-color: #FF9800; color: #FF9800; }

.divider { display: flex; align-items: center; margin: 22px 0; }
.divider::before, .divider::after { content: ""; flex: 1; border-bottom: 1px solid rgba(42, 42, 62, 0.6); }
.divider span { padding: 0 16px; color: #666; font-size: 12px; text-transform: uppercase; letter-spacing: 1px; }

.links { text-align: center; margin-top: 16px; }
.links a { color: #4CAF50; text-decoration: none; font-size: 14px; transition: color 0.3s; }
.links a:hover { color: #66BB6A; text-decoration: underline; }

.footer {
    text-align: center;
    margin-top: 25px;
    padding-top: 18px;
    border-top: 1px solid rgba(42, 42, 62, 0.4);
    color: #555;
    font-size: 12px;
}
.footer a { color: #4CAF50; text-decoration: none; margin: 0 8px; transition: color 0.3s; }
.footer a:hover { color: #66BB6A; text-decoration: underline; }

.notice {
    background: rgba(255, 152, 0, 0.08);
    border-left: 4px solid #FF9800;
    padding: 16px 18px;
    border-radius: 10px;
    margin-bottom: 20px;
}
.notice p { color: #B0B0B0; font-size: 13px; line-height: 1.6; margin-bottom: 4px; }
.notice strong { color: #FF9800; }

.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-radius: 10px;
    background: rgba(15, 15, 26, 0.5);
    padding: 4px;
}
.tab {
    flex: 1;
    padding: 10px;
    text-align: center;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: transparent;
    color: #666;
    border: none;
    font-size: 14px;
    font-weight: 500;
}
.tab.active { background: #4CAF50; color: white; box-shadow: 0 4px 15px rgba(76, 175, 80, 0.3); }
.tab:hover:not(.active) { background: rgba(255, 255, 255, 0.05); color: #aaa; }
.tab-content { display: none; }
.tab-content.active { display: block; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 480px) {
    .container { padding: 22px 18px; }
    .code-box .code { font-size: 24px; letter-spacing: 2px; }
    .logo h1 { font-size: 24px; }
    .btn { font-size: 14px; padding: 12px; }
    .tabs { flex-direction: column; gap: 6px; }
}