:root {
    --primary-dark: #0b1f3a;
    --primary-blue: #0d6efd;
    --soft-blue: #eaf4ff;
    --light-blue: #5dade2;
    --white: #ffffff;
    --text-dark: #1f2937;
    --text-muted: #6b7280;
    --shadow: 0 15px 40px rgba(11, 31, 58, 0.12);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.7;
}

/* Navbar */
.custom-navbar {
    background: rgba(11, 31, 58, 0.96);
    backdrop-filter: blur(10px);
    padding: 15px 0;
    box-shadow: 0 5px 20px rgba(11, 31, 58, 0.15);
}

.navbar-brand {
    letter-spacing: 0.3px;
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    margin-left: 12px;
    transition: 0.3s;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white);
}

.btn-login {
    background-color: var(--light-blue);
    color: var(--white);
    border-radius: 30px;
    padding: 8px 20px;
    font-weight: 600;
    transition: 0.3s;
}

.btn-login:hover {
    background-color: var(--white);
    color: var(--primary-dark);
}

/* Hero */
.hero-section {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #f8fbff 0%, #eaf4ff 50%, #ffffff 100%);
    padding-top: 80px;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero-badge {
    background-color: rgba(13, 110, 253, 0.12);
    color: var(--primary-blue);
    padding: 10px 16px;
    border-radius: 30px;
    font-size: 14px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--primary-dark);
    line-height: 1.2;
    margin-bottom: 20px;
}

.hero-text {
    font-size: 17px;
    color: var(--text-muted);
    max-width: 560px;
    margin-bottom: 30px;
}

.hero-button {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.btn-primary-custom {
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 35px;
    padding: 12px 28px;
    font-weight: 600;
    border: 2px solid var(--primary-blue);
    transition: 0.3s;
}

.btn-primary-custom:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-outline-custom {
    background-color: transparent;
    color: var(--primary-dark);
    border: 2px solid var(--primary-dark);
    border-radius: 35px;
    padding: 12px 28px;
    font-weight: 600;
    transition: 0.3s;
}

.btn-outline-custom:hover {
    background-color: var(--primary-dark);
    color: var(--white);
    transform: translateY(-2px);
}

.hero-card {
    position: relative;
    z-index: 2;
    background-color: var(--white);
    padding: 35px;
    border-radius: 25px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(13, 110, 253, 0.08);
}

.card-icon {
    width: 75px;
    height: 75px;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: var(--white);
    border-radius: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    margin-bottom: 20px;
}

.hero-card h4 {
    color: var(--primary-dark);
    font-weight: 700;
    margin-bottom: 12px;
}

.hero-card p {
    color: var(--text-muted);
    margin-bottom: 22px;
}

.info-list {
    margin-top: 25px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background-color: var(--soft-blue);
    padding: 14px 16px;
    border-radius: 15px;
    margin-bottom: 12px;
}

.info-item span {
    width: 36px;
    height: 36px;
    background-color: var(--primary-blue);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    font-size: 14px;
}

.info-item p {
    margin: 0;
    color: var(--primary-dark);
    font-weight: 500;
}

.hero-shape {
    position: absolute;
    width: 450px;
    height: 450px;
    background: rgba(93, 173, 226, 0.18);
    border-radius: 50%;
    right: -180px;
    top: 130px;
}

/* Section */
.section-padding {
    padding: 90px 0;
}

.section-label {
    display: inline-block;
    color: var(--primary-blue);
    font-weight: 700;
    margin-bottom: 10px;
    text-transform: uppercase;
    font-size: 13px;
    letter-spacing: 1px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: var(--primary-dark);
    margin-bottom: 15px;
}

.section-description {
    color: var(--text-muted);
    font-size: 16px;
}

/* About */
.about-section {
    background-color: var(--white);
}

.feature-card {
    height: 100%;
    background-color: var(--white);
    padding: 32px;
    border-radius: 22px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(13, 110, 253, 0.08);
    transition: 0.3s;
}

.feature-card:hover {
    transform: translateY(-6px);
}

.feature-icon {
    width: 62px;
    height: 62px;
    background-color: var(--soft-blue);
    color: var(--primary-blue);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    margin-bottom: 20px;
}

.feature-card h5 {
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Criteria */
.criteria-section {
    background: linear-gradient(135deg, var(--primary-dark), #103b70);
    color: var(--white);
}

.criteria-text {
    color: rgba(255, 255, 255, 0.78);
    font-size: 16px;
}

.criteria-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 25px;
    border-radius: 20px;
    height: 100%;
    border: 1px solid rgba(255, 255, 255, 0.15);
    transition: 0.3s;
}

.criteria-card:hover {
    background-color: rgba(255, 255, 255, 0.16);
    transform: translateY(-5px);
}

.criteria-icon {
    width: 52px;
    height: 52px;
    background-color: rgba(255, 255, 255, 0.16);
    color: var(--white);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    margin-bottom: 18px;
}

.criteria-card h5 {
    color: var(--white);
    font-weight: 700;
    margin-bottom: 10px;
}

.criteria-card p {
    color: rgba(255, 255, 255, 0.75);
    margin-bottom: 0;
}

.btn-light-custom {
    background-color: var(--white);
    color: var(--primary-dark);
    border-radius: 35px;
    padding: 12px 30px;
    font-weight: 700;
    transition: 0.3s;
}

.btn-light-custom:hover {
    background-color: var(--light-blue);
    color: var(--white);
    transform: translateY(-2px);
}

/* Footer */
.footer-section {
    background-color: #07182d;
    color: rgba(255, 255, 255, 0.75);
    padding: 22px 0;
    font-size: 14px;
}

/* Login Page */
.login-body {
    background: linear-gradient(135deg, #0b1f3a 0%, #103b70 50%, #eaf4ff 100%);
    min-height: 100vh;
}

.login-section {
    position: relative;
    overflow: hidden;
    min-height: 100vh;
}

.login-card {
    position: relative;
    z-index: 2;
    background-color: var(--white);
    padding: 38px;
    border-radius: 26px;
    box-shadow: 0 20px 60px rgba(7, 24, 45, 0.28);
    border: 1px solid rgba(255, 255, 255, 0.4);
}

.login-header {
    margin-bottom: 28px;
}

.login-icon {
    width: 78px;
    height: 78px;
    background: linear-gradient(135deg, var(--primary-blue), var(--light-blue));
    color: var(--white);
    border-radius: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 34px;
    margin: 0 auto 18px;
    box-shadow: 0 12px 25px rgba(13, 110, 253, 0.25);
}

.login-header h3 {
    color: var(--primary-dark);
    font-weight: 800;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 15px;
}

.login-card .form-label {
    color: var(--primary-dark);
    font-weight: 600;
    margin-bottom: 8px;
}

.login-input-group .input-group-text {
    background-color: var(--soft-blue);
    color: var(--primary-blue);
    border: 1px solid #d9e9ff;
    border-right: 0;
    border-radius: 14px 0 0 14px;
    width: 48px;
    justify-content: center;
}

.login-input-group .form-control {
    border: 1px solid #d9e9ff;
    border-left: 0;
    border-radius: 0 14px 14px 0;
    padding: 12px 14px;
    color: var(--text-dark);
}

.login-input-group .form-control:focus {
    box-shadow: none;
    border-color: #d9e9ff;
}

.login-input-group:focus-within .input-group-text {
    border-color: var(--primary-blue);
}

.login-input-group:focus-within .form-control {
    border-color: var(--primary-blue);
}

.login-footer a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
    transition: 0.3s;
}

.login-footer a:hover {
    color: var(--primary-dark);
}

.login-copy {
    position: relative;
    z-index: 2;
    color: rgba(255, 255, 255, 0.82);
    font-size: 14px;
}

.login-shape {
    position: absolute;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.12);
}

.shape-one {
    width: 280px;
    height: 280px;
    top: -90px;
    right: -80px;
}

.shape-two {
    width: 360px;
    height: 360px;
    bottom: -150px;
    left: -130px;
}

.login-card .alert {
    border-radius: 14px;
    font-size: 14px;
    border: none;
}

/* Public SPK Page */
.spk-body {
    background-color: #f4f8fc;
}

.spk-section {
    padding: 130px 0 80px;
    min-height: 100vh;
}

.spk-card {
    background-color: var(--white);
    border: 1px solid rgba(13, 110, 253, 0.08);
    border-radius: 24px;
    box-shadow: var(--shadow);
    padding: 28px;
}

.spk-form-card {
    top: 105px;
}

.spk-card-header {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 22px;
}

.spk-card-icon {
    width: 54px;
    height: 54px;
    border-radius: 18px;
    background-color: var(--soft-blue);
    color: var(--primary-blue);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}

.spk-card-header h4 {
    color: var(--primary-dark);
    font-weight: 800;
    margin-bottom: 4px;
}

.spk-card-header p {
    color: var(--text-muted);
    margin-bottom: 0;
    font-size: 14px;
}

.preference-item {
    display: grid;
    grid-template-columns: 1fr 92px;
    gap: 14px;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid #edf4fb;
}

.preference-item:last-of-type {
    border-bottom: none;
}

.preference-item .form-select,
.spk-card .form-select,
.spk-card .form-control {
    border: 1px solid #d9e9ff;
    border-radius: 14px;
    padding: 11px 14px;
}

.preference-item .form-select:focus,
.spk-card .form-select:focus,
.spk-card .form-control:focus {
    box-shadow: none;
    border-color: var(--primary-blue);
}

.facility-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.facility-option {
    display: flex;
    align-items: center;
    gap: 9px;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid #d9e9ff;
    border-radius: 14px;
    background-color: #f8fbff;
    color: var(--primary-dark);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}

.facility-option input {
    width: 16px;
    height: 16px;
    accent-color: var(--primary-blue);
    flex-shrink: 0;
}

.public-map-picker {
    width: 100%;
    height: 300px;
    border: 1px solid #d9e9ff;
    border-radius: 18px;
    overflow: hidden;
    background-color: var(--soft-blue);
}

.map-picker-message {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    color: var(--text-muted);
    font-size: 14px;
    text-align: center;
}

.spk-placeholder {
    min-height: 360px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    flex-direction: column;
    color: var(--text-muted);
}

.spk-placeholder i,
.spk-empty-icon {
    font-size: 46px;
    color: var(--primary-blue);
    margin-bottom: 18px;
}

.spk-placeholder h4,
.spk-card h4 {
    color: var(--primary-dark);
    font-weight: 800;
}

.recommendation-card {
    background: linear-gradient(135deg, var(--primary-dark), #103b70);
    color: var(--white);
    border-radius: 24px;
    padding: 32px;
    box-shadow: var(--shadow);
    overflow: hidden;
    position: relative;
}

.recommendation-card::after {
    content: "";
    position: absolute;
    width: 220px;
    height: 220px;
    right: -80px;
    top: -90px;
    border-radius: 50%;
    background-color: rgba(93, 173, 226, 0.18);
}

.recommendation-card h3,
.recommendation-card p,
.recommendation-badge {
    position: relative;
    z-index: 2;
}

.recommendation-badge {
    display: inline-block;
    background-color: rgba(255, 255, 255, 0.14);
    color: var(--white);
    padding: 8px 14px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 14px;
}

.recommendation-card h3 {
    font-weight: 800;
    margin-bottom: 10px;
}

.recommendation-card p {
    color: rgba(255, 255, 255, 0.78);
    margin-bottom: 0;
}

.result-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-item {
    display: grid;
    grid-template-columns: 46px 1fr auto;
    gap: 14px;
    align-items: center;
    padding: 16px;
    border: 1px solid #e4f0fb;
    border-radius: 18px;
    background-color: #f8fbff;
}

.result-rank {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background-color: var(--primary-blue);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
}

.result-content h5 {
    color: var(--primary-dark);
    font-weight: 800;
    margin-bottom: 4px;
}

.result-content p {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 0;
}

.result-score {
    color: var(--primary-blue);
    font-weight: 800;
    white-space: nowrap;
}

.spk-table thead th {
    background-color: var(--soft-blue);
    color: var(--primary-dark);
    border-bottom: none;
    font-size: 14px;
}

.spk-table td {
    color: var(--text-dark);
    font-size: 14px;
}

/* Responsive */
@media (max-width: 991px) {
    .hero-title {
        font-size: 38px;
    }

    .hero-section {
        padding-top: 100px;
    }

    .section-title {
        font-size: 30px;
    }

    .navbar-nav .nav-link {
        margin-left: 0;
        margin-top: 8px;
    }

    .btn-login {
        margin-top: 10px;
        display: inline-block;
    }

    .spk-form-card {
        top: auto;
    }
}

@media (max-width: 575px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-text {
        font-size: 15px;
    }

    .hero-card {
        padding: 25px;
    }

    .section-padding {
        padding: 65px 0;
    }

    .hero-button .btn {
        width: 100%;
        text-align: center;
    }

    .login-card {
        padding: 28px 22px;
        border-radius: 22px;
    }

    .login-icon {
        width: 68px;
        height: 68px;
        font-size: 30px;
    }

    .login-header h3 {
        font-size: 24px;
    }

    .spk-section {
        padding-top: 115px;
    }

    .spk-card,
    .recommendation-card {
        padding: 22px;
        border-radius: 20px;
    }

    .preference-item {
        grid-template-columns: 1fr;
    }

    .facility-grid {
        grid-template-columns: 1fr;
    }

    .result-item {
        grid-template-columns: 42px 1fr;
    }

    .result-score {
        grid-column: 2;
    }
}