/* ==================================================
   REGISTER.CSS – NAGOYAWIN (BIRU TUA + HITAM)
   ================================================== */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #0b0e1a;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    position: relative;
}

/* Outer border */
.outer-border {
    position: fixed;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    border: 2px solid rgba(29, 78, 216, 0.15);
    border-radius: 32px;
    pointer-events: none;
    box-shadow: 0 0 40px rgba(29, 78, 216, 0.05);
    z-index: 0;
}

/* ===== CARD ===== */
.card {
    position: relative;
    z-index: 1;
    max-width: 440px;
    width: 100%;
    background: #12182b;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-radius: 40px;
    padding: 32px 26px 28px;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(29, 78, 216, 0.15);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

/* ===== LOGO ===== */
.logo-register {
    margin-bottom: 10px;
}

/* ===== TITLE ===== */
.title {
    text-align: center;
    font-size: 1.8rem;
    font-weight: 800;
    color: #FFD700;
    letter-spacing: 2px;
    margin-bottom: 4px;
}

.sub {
    text-align: center;
    font-size: 0.85rem;
    color: #94a3b8;
    font-weight: 500;
    margin-bottom: 24px;
    letter-spacing: 0.5px;
}

/* ===== ERROR ===== */
.error {
    background: rgba(248, 113, 113, 0.1);
    color: #f87171;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 18px;
    border-left: 4px solid #f87171;
    text-align: center;
}

/* ===== INPUT GROUP ===== */
.input-group {
    position: relative;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    background: #080c16;
    border-radius: 16px;
    border: 2px solid #1e293b;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.input-group:focus-within {
    border-color: #3b82f6;
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.08);
}

.input-group i {
    color: #3b82f6;
    font-size: 1rem;
    padding: 0 0 0 16px;
    width: 40px;
    text-align: center;
    opacity: 0.8;
}

.input-group input,
.input-group select {
    flex: 1;
    padding: 14px 16px 14px 4px;
    border: none;
    background: transparent;
    font-size: 0.95rem;
    font-family: inherit;
    color: #e2e8f0;
    outline: none;
    width: 100%;
}

.input-group select {
    appearance: none;
    cursor: pointer;
    padding-right: 36px;
    color: #e2e8f0;
}

.input-group select option {
    color: #e2e8f0;
    background: #12182b;
}

.input-group .toggle-password {
    padding: 0 16px 0 0;
    cursor: pointer;
    color: #475569;
    font-size: 1rem;
    transition: color 0.2s;
}

.input-group .toggle-password:hover {
    color: #60a5fa;
}

/* Placeholder */
.input-group input::placeholder {
    color: #475569;
    font-weight: 400;
    font-size: 0.9rem;
}

/* ===== CHECKBOX ===== */
.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 18px 0 22px;
    font-size: 0.85rem;
    color: #e2e8f0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #3b82f6;
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-group label {
    cursor: pointer;
    color: #94a3b8;
}

.checkbox-group label:hover {
    color: #e2e8f0;
}

/* ===== BUTTON ===== */
.btn {
    width: 100%;
    padding: 16px 0;
    background: linear-gradient(135deg, #1d4ed8, #1a3a8a);
    color: white;
    border: none;
    border-radius: 60px;
    font-size: 1.05rem;
    font-weight: 700;
    letter-spacing: 1.5px;
    cursor: pointer;
    transition: all 0.25s ease;
    box-shadow: 0 8px 25px rgba(29, 78, 216, 0.25);
    text-transform: uppercase;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(29, 78, 216, 0.35);
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.btn:active {
    transform: scale(0.96);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* ===== LINK ===== */
.link {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: #475569;
}

.link a {
    color: #3b82f6;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.link a:hover {
    color: #60a5fa;
    text-decoration: underline;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 480px) {
    .card {
        padding: 24px 18px 20px;
        border-radius: 28px;
    }
    .sub {
        font-size: 0.75rem;
    }
    .input-group {
        border-radius: 12px;
        margin-bottom: 12px;
    }
    .input-group input,
    .input-group select {
        font-size: 0.85rem;
        padding: 12px 12px 12px 0;
    }
    .input-group i {
        padding-left: 12px;
        width: 34px;
        font-size: 0.9rem;
    }
    .btn {
        font-size: 0.9rem;
        padding: 14px 0;
    }
    .outer-border {
        top: 6px;
        left: 6px;
        right: 6px;
        bottom: 6px;
        border-radius: 24px;
    }
}

@media (max-width: 380px) {
    .card {
        padding: 18px 14px 16px;
        border-radius: 24px;
    }
    .btn {
        font-size: 0.8rem;
        padding: 12px 0;
    }
    .input-group input,
    .input-group select {
        font-size: 0.8rem;
        padding: 10px 10px 10px 0;
    }
}