:root {
    /* Color Palette */
    --primary: #6366f1; /* Indigo */
    --primary-hover: #4f46e5;
    --secondary: #ec4899; /* Pink */
    --success: #10b981;
    --danger: #ef4444;
    
    /* Backgrounds */
    --bg-main: #f0fdfa; /* Soft teal light */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    
    /* Text */
    --text-main: #1e293b;
    --text-muted: #64748b;
    
    /* Effects */
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.025);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Calibri', 'Candara', 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #e0e7ff 0%, #fce7f3 100%);
    background-attachment: fixed;
    color: var(--text-main);
    min-height: 100vh;
    line-height: 1.6;
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 5%;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Trebuchet MS', 'Arial', sans-serif;
}

.nav-logo-img {
    height: 35px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    gap: 1rem;
}

.nav-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}

.nav-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary);
}

.nav-btn.active {
    background: var(--primary);
    color: white;
}

/* Layout */
.container {
    max-width: 900px;
    margin: 2rem auto;
    padding: 0 1.5rem;
}

.view-section {
    display: none;
}

.view-section.active {
    display: block;
    animation: fadeIn 0.4s ease-out forwards;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.header-section {
    text-align: center;
    margin-bottom: 2.5rem;
}

.header-section h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    font-family: 'Trebuchet MS', 'Arial', sans-serif;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-section p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Glass Card */
.glass {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.card {
    padding: 2rem;
    margin-bottom: 1.5rem;
    transition: var(--transition);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.card:hover {
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.05), 0 10px 10px -5px rgba(0, 0, 0, 0.02);
    transform: translateY(-2px);
}

.card h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--primary);
    border-bottom: 2px solid rgba(99, 102, 241, 0.2);
    padding-bottom: 0.5rem;
    font-family: 'Trebuchet MS', 'Arial', sans-serif;
}

/* Form Styles */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-main);
}

input[type="text"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="tel"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.9);
    font-family: 'Calibri', 'Candara', 'Segoe UI', sans-serif;
    font-size: 1rem;
    color: var(--text-main);
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    background: #ffffff;
}

/* Contoh isian (placeholder) lebih kecil agar tidak mendominasi */
::placeholder {
    font-size: 0.82rem;
    color: #a0aec0;
    font-style: italic;
}

textarea {
    resize: vertical;
}

/* Checkbox Groups */
.group-label {
    font-weight: 600;
    margin-bottom: 0.75rem;
    display: block;
    color: var(--text-main);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.custom-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.custom-checkbox:hover {
    color: var(--primary);
}

.custom-checkbox input {
    margin-top: 0.25rem;
    width: 1.1rem;
    height: 1.1rem;
    accent-color: var(--primary);
    cursor: pointer;
}

/* Evaluation Grid */
.eval-grid {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.eval-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 8px;
    border: 1px solid rgba(0,0,0,0.05);
}

.eval-row span {
    font-weight: 500;
}

.rating-group {
    display: flex;
    gap: 2.5rem;
}

.rating-group label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    padding: 0.2rem;
}

.rating-group input {
    accent-color: var(--primary);
    transform: scale(1.2);
    cursor: pointer;
}

/* Secret Section */
.secret-section {
    border: 2px dashed var(--danger);
    background: rgba(254, 226, 226, 0.5);
}

.secret-section h2 {
    color: var(--danger);
    border-bottom-color: rgba(239, 68, 68, 0.2);
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

/* Buttons */
.form-actions {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    justify-content: flex-end;
    margin-top: 2rem;
    border-radius: var(--radius);
}

button, a[class*="btn-"] {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
}

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

.btn-secondary {
    background: white;
    color: var(--primary);
    border: 1px solid var(--primary);
}
.btn-secondary:hover { background: rgba(99, 102, 241, 0.05); }

.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover { background: #059669; transform: translateY(-2px); }

.btn-danger {
    background: transparent;
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.1); }

/* Admin Table */
.admin-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
}

.table-container {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

th {
    font-weight: 600;
    color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

tbody tr {
    transition: var(--transition);
}

tbody tr:hover {
    background: rgba(255, 255, 255, 0.8);
}

.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: rgba(0,0,0,0.2);
}

/* Utilities */
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mb-4 { margin-bottom: 1.5rem; }

/* Responsive */
@media (max-width: 768px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .eval-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button {
        width: 100%;
        justify-content: center;
    }
}

/* --- LOGIN SECTION STYLES --- */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80vh;
}

.login-card {
    max-width: 450px;
    width: 100%;
    text-align: center;
    padding: 3rem 2.5rem;
    position: relative;
    overflow: hidden;
}

.login-card::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
    z-index: -1;
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.login-header {
    margin-bottom: 2rem;
}

.login-logo-img {
    height: 80px;
    width: auto;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.login-header h2 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-main);
    border-bottom: none;
    justify-content: center;
    margin-bottom: 0.2rem;
    padding-bottom: 0;
}

.by-pmt {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--primary);
    letter-spacing: 1px;
}

.login-body h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-main);
}

.login-body p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 2rem;
}

.btn-google {
    width: 100%;
    justify-content: center;
    background: white;
    color: var(--text-main);
    border: 1px solid rgba(0,0,0,0.1);
    box-shadow: var(--shadow-sm);
    padding: 0.9rem;
    font-size: 1.05rem;
}

.btn-google:hover {
    background: #f8fafc;
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
    border-color: rgba(99, 102, 241, 0.3);
}

.btn-google i {
    color: #ea4335;
    font-size: 1.3rem;
}

.error-msg {
    margin-top: 1.5rem;
    padding: 1rem;
    background: rgba(254, 226, 226, 0.9);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 8px;
    color: var(--danger);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-align: left;
    animation: fadeIn 0.3s ease-out;
}

.error-msg i {
    font-size: 1.2rem;
}

/* --- SUCCESS SECTION STYLES --- */
.success-card {
    max-width: 500px;
    margin: 4rem auto;
    padding: 3rem 2rem;
}

.text-center {
    text-align: center;
}

.success-icon {
    font-size: 5rem;
    color: var(--success);
    margin-bottom: 1rem;
    animation: scaleIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes scaleIn {
    0% { transform: scale(0); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.success-card h2 {
    font-size: 1.5rem;
    color: var(--text-main);
    border-bottom: none;
    justify-content: center;
    line-height: 1.4;
    margin-bottom: 0.25rem;
}

.success-subtitle {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.success-actions {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.success-actions a, .success-actions button {
    text-decoration: none;
}