* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
    background-color: #0284c7;
    color: #ffffff;
    overflow-x: hidden;
}

/* 🌊 BG LAUT TROPIS CERAH, OMBAK TENANG, DAN RIG MINYAK LEPAS PANTAI */
.hero-section {
    min-height: 100vh;
    width: 100%;
    background-image: linear-gradient(to bottom, rgba(14, 165, 233, 0.3) 0%, rgba(3, 105, 161, 0.7) 100%), 
                      url('https://unsplash.com');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
}

.container {
    max-width: 1200px;
    width: 100%;
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 50px;
    align-items: center;
}

.hero-text {
    padding-right: 10px;
}

.tagline {
    display: inline-flex;
    align-items: center;
    background: #ffffff;
    color: #0369a1;
    padding: 8px 18px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 25px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.hero-text h1 {
    font-size: 46px;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -1.5px;
    margin-bottom: 20px;
    color: #ffffff;
    text-shadow: 0 4px 15px rgba(2, 43, 89, 0.8);
}

.hero-text p.description {
    font-size: 16px;
    color: #f0f9ff;
    line-height: 1.6;
    margin-bottom: 35px;
    font-weight: 500;
    text-shadow: 0 2px 8px rgba(2, 43, 89, 0.8);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 18px;
    border-radius: 16px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 8px 32px rgba(2, 43, 89, 0.2);
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.25);
    border-color: #ffffff;
    box-shadow: 0 12px 24px rgba(0,0,0,0.25);
}

.feature-icon {
    font-size: 26px;
    margin-bottom: 8px;
    display: inline-block;
}

.feature-card h3 {
    font-size: 15px;
    font-weight: 800;
    color: #ffffff;
    margin-bottom: 4px;
}

.feature-card p {
    font-size: 13px;
    color: #f0f9ff;
    line-height: 1.4;
    font-weight: 500;
}

/* 🔐 FORM LOGIN CARD */
.login-card {
    background: rgba(255, 255, 255, 0.97);
    color: #0f172a;
    padding: 45px 35px;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(2, 43, 89, 0.5);
    border: 1px solid #ffffff;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h2 {
    font-size: 25px;
    font-weight: 800;
    color: #0369a1;
    letter-spacing: -0.5px;
}

.login-header p {
    font-size: 14px;
    color: #475569;
    margin-top: 6px;
    font-weight: 500;
}

.alert {
    padding: 12px 15px;
    border-radius: 12px;
    font-size: 13px;
    margin-bottom: 20px;
    font-weight: 700;
    text-align: center;
}

.alert-error {
    background-color: #fee2e2;
    color: #ef4444;
    border: 1px solid #fca5a5;
}

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

.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 800;
    color: #0369a1;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    font-size: 15px;
    border: 2px solid #cbd5e1;
    border-radius: 12px;
    outline: none;
    transition: all 0.3s ease;
    color: #0f172a;
    background-color: #f8fafc;
    font-weight: 500;
}

.form-control:focus {
    border-color: #0284c7;
    background-color: #ffffff;
    box-shadow: 0 0 0 4px rgba(2, 132, 199, 0.2);
}

.btn-submit {
    width: 100%;
    padding: 15px;
    background: linear-gradient(135deg, #0284c7 0%, #0369a1 100%);
    color: #ffffff;
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 14px rgba(2, 132, 199, 0.4);
    margin-top: 5px;
}

.btn-submit:hover {
    transform: translateY(-1px);
    background: linear-gradient(135deg, #0369a1 0%, #075985 100%);
}

.register-box {
    margin-top: 30px;
    border-top: 2px solid #f1f5f9;
    padding-top: 20px;
    text-align: center;
}

.register-box p {
    font-size: 13.5px;
    color: #475569;
    margin-bottom: 12px;
    font-weight: 500;
}

.btn-reg-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.btn-outline {
    display: block;
    padding: 11px 5px;
    border: 2px solid #0284c7;
    color: #0284c7;
    text-decoration: none;
    border-radius: 11px;
    font-size: 12.5px;
    font-weight: 800;
    transition: all 0.2s ease;
}

.btn-outline:hover {
    background-color: #0284c7;
    color: #ffffff;
}

@media (max-width: 968px) {
    .container { grid-template-columns: 1fr; gap: 40px; text-align: center; }
    .hero-text { padding-right: 0; }
    .tagline { justify-content: center; }
    .hero-text h1 { font-size: 32px; }
    .features-grid { text-align: left; grid-template-columns: 1fr; }
    .btn-reg-group { grid-template-columns: 1fr; }
}