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

:root {
    --lintblauw: #154273;
    --donkerblauw: #01689b;
    --hemelblauw: #007bc7;
    --lichtblauw: #8fcae7;
    --oranje: #e17000;
    --donkergeel: #ffb612;
    --groen: #39870c;
    --rood: #d52b1e;
    --grijs-1: #f5f7fa;
    --grijs-2: #e8ecf1;
    --grijs-3: #d1d9e0;
    --grijs-4: #a0aab5;
    --grijs-5: #4a5568;
    --wit: #ffffff;
    --zwart: #1a202c;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    background-color: var(--grijs-1);
    color: var(--grijs-5);
    line-height: 1.7;
}

.container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 20px;
}

.promo-leaderboard {
    display: none;
}

header {
    text-align: center;
    margin-bottom: 30px;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--lintblauw) 0%, var(--donkerblauw) 100%);
    color: var(--wit);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

header:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

header h1 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: -0.5px;
}

header .subtitle {
    font-size: 1.15rem;
    font-weight: 400;
    opacity: 0.9;
}

.main-content {
    background: var(--wit);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.content-wrapper {
    display: flex;
    gap: 30px;
}

.cost-display-section {
    flex: 1;
}

.sidebar {
    flex-shrink: 0;
}

.promo-skyscraper {
    display: none;
}

.cost-display {
    text-align: center;
    padding: 50px 40px;
    background: linear-gradient(135deg, var(--lintblauw) 0%, var(--donkerblauw) 100%);
    margin-bottom: 35px;
    box-shadow: var(--shadow-md);
}

.total-cost {
    font-size: 4.5rem;
    font-weight: 700;
    color: var(--wit);
    margin-bottom: 24px;
    font-family: 'Inter', 'Segoe UI', system-ui, monospace;
    letter-spacing: 1px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.time-display, .cost-per-second {
    font-size: 1.2rem;
    color: var(--wit);
    margin: 8px 0;
}

.time-display .label, .cost-per-second .label {
    opacity: 0.85;
}

#elapsed-time, #cost-per-second {
    font-family: 'RijksoverheidSansText', monospace;
    font-weight: 600;
}

.controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn {
    padding: 14px 28px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-sm);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn:focus {
    outline: 3px solid var(--donkergeel);
    outline-offset: 2px;
}

.btn-start {
    background-color: var(--groen);
    color: var(--wit);
}

.btn-start:hover {
    background-color: #2d6e0a;
}

.btn-pause {
    background-color: var(--oranje);
    color: var(--wit);
}

.btn-pause:hover {
    background-color: #c56200;
}

.btn-reset {
    background-color: var(--donkerblauw);
    color: var(--wit);
}

.btn-reset:hover {
    background-color: var(--lintblauw);
}

.btn-reset-all {
    background-color: var(--rood);
    color: var(--wit);
}

.btn-reset-all:hover {
    background-color: #b82318;
}

.homepage-layout {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: flex-start;
    margin-bottom: 30px;
}

.promo-sidebar {
    display: none;
}

.promo-vertical {
    display: none;
}

.type-selector {
    flex: 1;
    max-width: 700px;
    padding: 40px 30px;
    background: var(--wit);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.type-selector h2 {
    color: var(--lintblauw);
    margin-bottom: 30px;
    font-size: 1.6rem;
    font-weight: 600;
}

.type-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.btn-type {
    background-color: #154273;
    background: linear-gradient(135deg, #01689b 0%, #154273 100%);
    color: #ffffff;
    padding: 22px 48px;
    font-size: 1.15rem;
    min-width: 220px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
    user-select: none;
    -webkit-user-select: none;
    display: inline-block;
    cursor: pointer;
}

.btn-type:hover, .btn-type:active {
    background-color: #01689b;
    background: linear-gradient(135deg, #154273 0%, #01689b 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(0, 0, 0, 0.15);
}

.intro-text {
    text-align: left;
    max-width: 700px;
    margin: 0 auto;
    border-top: 2px solid var(--grijs-2);
    padding-top: 35px;
}

.intro-text h3 {
    color: var(--lintblauw);
    font-size: 1.25rem;
    margin-bottom: 12px;
    font-weight: 600;
}

.intro-text p {
    color: var(--grijs-5);
    margin-bottom: 20px;
    font-size: 0.95rem;
    line-height: 1.8;
}

.intro-text ul {
    margin: 0 0 20px 20px;
    color: var(--grijs-5);
    font-size: 0.95rem;
    line-height: 1.8;
}

.intro-text ul li {
    margin-bottom: 8px;
}

.intro-text .highlight {
    color: var(--donkerblauw);
    font-weight: 600;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 16px;
}

.section-header h2 {
    margin-bottom: 0;
}

.btn-change-type {
    background-color: var(--grijs-4);
    color: var(--wit);
    padding: 8px 16px;
    font-size: 0.85rem;
}

.btn-change-type:hover {
    background-color: var(--grijs-5);
}

.current-type-label {
    background-color: var(--lintblauw);
    color: var(--wit);
    padding: 4px 12px;
    font-size: 0.85rem;
    display: inline-block;
    margin-bottom: 10px;
}

.participants-section {
    border-top: 3px solid var(--lintblauw);
    padding-top: 28px;
}

.participants-section h2 {
    color: var(--lintblauw);
    margin-bottom: 16px;
    font-size: 1.25rem;
    font-weight: 700;
}

#participant-count {
    color: var(--donkerblauw);
    font-weight: 400;
}

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

#scale-table {
    width: 100%;
    border-collapse: collapse;
    box-shadow: var(--shadow-sm);
}

#scale-table th,
#scale-table td {
    padding: 14px 18px;
    text-align: left;
    border-bottom: 1px solid var(--grijs-2);
}

#scale-table th {
    background: linear-gradient(135deg, var(--lintblauw) 0%, var(--donkerblauw) 100%);
    color: var(--wit);
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

#scale-table tbody tr {
    transition: background-color 0.15s ease;
}

#scale-table tbody tr:hover {
    background-color: rgba(1, 104, 155, 0.08);
}

#scale-table tbody tr:nth-child(even) {
    background-color: var(--grijs-1);
}

.count-cell {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn-count {
    width: 36px;
    height: 36px;
    border: none;
    font-size: 1.2rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.btn-count:focus {
    outline: 3px solid var(--donkergeel);
    outline-offset: 2px;
}

.btn-minus {
    background-color: var(--rood);
    color: var(--wit);
}

.btn-minus:hover {
    background-color: #b82318;
}

.btn-plus {
    background-color: var(--groen);
    color: var(--wit);
}

.btn-plus:hover {
    background-color: #2d6e0a;
}

.count-input {
    width: 60px;
    height: 36px;
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    border: 2px solid var(--grijs-3);
    background-color: var(--wit);
}

.count-input:focus {
    outline: none;
    border-color: var(--donkerblauw);
}

.count-input::-webkit-inner-spin-button,
.count-input::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.count-input[type=number] {
    -moz-appearance: textfield;
}

.info-section {
    max-width: 900px;
    margin: 60px auto 0;
    padding: 50px 40px;
    background-color: #ffffff;
    background: var(--wit);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-top: 4px solid #154273;
    border-top-color: var(--lintblauw);
}

.info-section h2 {
    color: #154273;
    color: var(--lintblauw);
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 30px;
    text-align: center;
}

.info-block {
    margin-bottom: 30px;
}

.info-block:last-child {
    margin-bottom: 0;
}

.info-block h3 {
    color: #154273;
    color: var(--lintblauw);
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.info-block p {
    color: #535353;
    color: var(--grijs-5);
    line-height: 1.7;
    font-size: 1rem;
}

.info-block ul {
    margin: 15px 0 0 0;
    padding-left: 20px;
    color: #535353;
    color: var(--grijs-5);
}

.info-block li {
    margin-bottom: 10px;
    line-height: 1.6;
}

.info-block li strong {
    color: #154273;
    color: var(--lintblauw);
}

.contact-section {
    max-width: 600px;
    margin: 40px auto 0;
    padding: 40px;
    background-color: #ffffff;
    background: var(--wit);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-top: 4px solid #154273;
    border-top-color: var(--lintblauw);
    text-align: center;
}

.btn-contact {
    display: inline-block;
    background-color: #154273;
    background: linear-gradient(135deg, #01689b 0%, #154273 100%);
    color: #ffffff;
    padding: 16px 40px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    margin-top: 15px;
}

.btn-contact:hover {
    background: linear-gradient(135deg, #154273 0%, #01689b 100%);
    transform: translateY(-2px);
}

.contact-section h2 {
    color: var(--lintblauw);
    margin-bottom: 8px;
    font-size: 1.5rem;
    font-weight: 700;
}

.contact-intro {
    color: var(--grijs-5);
    margin-bottom: 24px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: var(--lintblauw);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--grijs-3);
    font-size: 1rem;
    font-family: inherit;
    background-color: var(--wit);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--donkerblauw);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-send {
    background-color: var(--donkerblauw);
    color: var(--wit);
    width: 100%;
    padding: 16px;
}

.btn-send:hover {
    background-color: var(--lintblauw);
}

.form-result {
    margin-top: 16px;
    padding: 12px;
    text-align: center;
    display: none;
}

.form-result.success {
    display: block;
    background-color: #e8f5e9;
    color: var(--groen);
    border: 1px solid var(--groen);
}

.form-result.error {
    display: block;
    background-color: #ffebee;
    color: var(--rood);
    border: 1px solid var(--rood);
}

footer {
    text-align: center;
    margin-top: 40px;
    padding: 30px 20px;
    color: var(--grijs-4);
    font-size: 0.9rem;
    background: var(--wit);
    box-shadow: var(--shadow-sm);
}

footer a {
    color: var(--donkerblauw);
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--lintblauw);
    text-decoration: underline;
}

.promo-mobile {
    display: none;
}

@media (max-width: 1200px) {
    .homepage-layout {
        flex-direction: column;
        align-items: center;
    }
    
    .promo-sidebar {
        display: none;
    }
    
    .type-selector {
        max-width: 100%;
        width: 100%;
    }
}

@media (max-width: 1024px) {
    .content-wrapper {
        flex-direction: column;
    }
    
    .sidebar {
        display: none;
    }
    
    .promo-mobile {
        display: none;
    }
    
    .promo-leaderboard {
        width: 100%;
        max-width: 100%;
        height: 100px;
    }
    
    .table-container {
        max-width: 100%;
        overflow-x: auto;
    }
    
    #scale-table {
        font-size: 0.9rem;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 12px;
    }
    
    header {
        padding: 30px 15px;
        margin-bottom: 20px;
    }
    
    header h1 {
        font-size: 1.5rem;
    }
    
    header .subtitle {
        font-size: 0.95rem;
    }
    
    .type-selector {
        padding: 25px 20px;
    }
    
    .type-selector h2 {
        font-size: 1.3rem;
        margin-bottom: 20px;
    }
    
    .type-buttons {
        flex-direction: column;
        gap: 12px;
        margin-bottom: 30px;
    }
    
    .btn-type {
        width: 100%;
        padding: 18px 20px;
        font-size: 1rem;
        min-width: auto;
    }
    
    .intro-text {
        padding-top: 25px;
    }
    
    .intro-text h3 {
        font-size: 1.1rem;
    }
    
    .intro-text p, .intro-text ul {
        font-size: 0.9rem;
    }
    
    .total-cost {
        font-size: 2.8rem;
    }
    
    .cost-display {
        padding: 30px 20px;
    }
    
    .time-display, .cost-per-second {
        font-size: 1rem;
    }
    
    .main-content {
        padding: 20px 15px;
    }
    
    .controls {
        flex-direction: column;
        gap: 10px;
    }
    
    .btn {
        width: 100%;
        padding: 16px 20px;
    }
    
    .promo-leaderboard {
        height: 60px;
        font-size: 12px;
    }
    
    #scale-table th,
    #scale-table td {
        padding: 12px 8px;
        font-size: 0.85rem;
    }
    
    .count-cell {
        gap: 6px;
    }
    
    .btn-count {
        width: 36px;
        height: 36px;
        font-size: 1.1rem;
    }
    
    .count-input {
        width: 50px;
        height: 36px;
        font-size: 1rem;
    }
    
    .participants-section h2 {
        font-size: 1.1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
    
    .btn-change-type {
        width: 100%;
    }
    
    .info-section {
        padding: 30px 20px;
        margin-top: 40px;
    }
    
    .info-section h2 {
        font-size: 1.4rem;
        margin-bottom: 20px;
    }
    
    .info-block h3 {
        font-size: 1.05rem;
    }
    
    .info-block p {
        font-size: 0.95rem;
    }
    
    .contact-section {
        padding: 25px 20px;
        margin-top: 25px;
    }
    
    footer {
        padding: 20px 15px;
        margin-top: 25px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 8px;
    }
    
    header h1 {
        font-size: 1.3rem;
    }
    
    .total-cost {
        font-size: 2.2rem;
    }
    
    .intro-text h3 {
        font-size: 1rem;
    }
    
    .intro-text p, .intro-text ul {
        font-size: 0.85rem;
    }
    
    #scale-table th,
    #scale-table td {
        padding: 10px 6px;
        font-size: 0.8rem;
    }
    
    .btn-count {
        width: 32px;
        height: 32px;
    }
    
    .count-input {
        width: 45px;
        height: 32px;
    }
}