:root {
    --primary-green: #9ACD32;
    --dark-green: #7CB342;
    --light-green: #C5E17A;
    --black: #1a1a1a;
    --white: #ffffff;
    --gray-light: #f5f5f5;
    --gray: #e0e0e0;
    --text-dark: #333333;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --danger: #d32f2f;
    --info-blue: #1976D2;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--gray-light);
    color: var(--text-dark);
    line-height: 1.6;
}

.header {
    background: linear-gradient(135deg, var(--black) 0%, var(--black) 40%, var(--primary-green) 40%, var(--primary-green) 100%);
    color: var(--white);
    padding: 1rem 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 50px;
    height: 50px;
    color: var(--primary-green);
}

.company-name {
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 1px;
}

.company-name .highlight {
    color: var(--primary-green);
    font-weight: 600;
}

.main-content {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    min-height: calc(100vh - 150px);
}

h2 {
    color: var(--black);
    margin-bottom: 1.5rem;
    font-size: 1.6rem;
    border-bottom: 3px solid var(--primary-green);
    padding-bottom: 0.5rem;
}

h3 {
    color: var(--black);
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

/* Upload Sectie */
.upload-section {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    text-align: center;
    border: 2px dashed var(--gray);
    transition: border-color 0.3s ease;
}

.upload-section:hover {
    border-color: var(--primary-green);
}

.upload-label {
    cursor: pointer;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-dark);
    font-weight: 600;
}

.upload-icon {
    font-size: 2rem;
}

.status-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 5px;
    font-size: 0.9rem;
}

.status-message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.status-message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Algemene Info */
.algemene-info {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

/* Dagen Tabs */
.dagen-tabs {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.tabs-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.dag-tab {
    background: var(--gray-light);
    border: 2px solid var(--gray);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    position: relative;
}

.dag-tab:hover {
    border-color: var(--primary-green);
    transform: translateY(-2px);
}

.dag-tab.active {
    background: var(--primary-green);
    border-color: var(--primary-green);
    color: var(--black);
}

.dag-tab .dag-uren-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--black);
    color: var(--primary-green);
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    font-weight: 700;
}

/* Dag Content */
.dag-content {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.dag-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.btn-add {
    background: var(--primary-green);
    color: var(--black);
    border: none;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-add:hover {
    background: var(--dark-green);
    transform: translateY(-2px);
}

.project-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

/* Project Item */
.project-item {
    background: var(--gray-light);
    padding: 1.25rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-green);
    position: relative;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.project-item-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr auto;
    gap: 1rem;
    margin-bottom: 1rem;
    align-items: end;
}

.btn-remove {
    background: var(--danger);
    color: var(--white);
    border: none;
    padding: 0.6rem 1rem;
    font-size: 0.9rem;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    height: fit-content;
    white-space: nowrap;
}

.btn-remove:hover {
    background: #b71c1c;
}

.tijd-row {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 1rem;
    align-items: end;
}

.uren-display {
    background: var(--black);
    color: var(--primary-green);
    text-align: center;
    padding: 0.75rem;
    border-radius: 5px;
    font-weight: 700;
    font-size: 1.1rem;
}

/* Dag Totaal */
.dag-totaal {
    display: flex;
    justify-content: flex-end;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 2px solid var(--primary-green);
}

.dag-totaal-box {
    background: var(--black);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-align: right;
}

.dag-totaal-box .totaal-label {
    font-size: 0.8rem;
    color: var(--gray);
}

.dag-totaal-box .totaal-waarde {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-green);
}

/* Week Overzicht */
.week-overzicht {
    background: var(--white);
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
}

.week-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.75rem;
    margin-top: 1rem;
}

.week-dag-card {
    background: var(--black);
    color: var(--white);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
}

.week-dag-card .wd-label {
    font-size: 0.8rem;
    color: var(--gray);
    margin-bottom: 0.3rem;
}

.week-dag-card .wd-waarde {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-green);
}

.week-dag-card.week-totaal {
    background: var(--primary-green);
    color: var(--black);
}

.week-dag-card.week-totaal .wd-label {
    color: var(--black);
}

.week-dag-card.week-totaal .wd-waarde {
    color: var(--black);
    font-size: 1.6rem;
}

/* Formulier */
.form-group {
    margin-bottom: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

label {
    display: block;
    margin-bottom: 0.4rem;
    font-weight: 600;
    color: var(--text-dark);
    font-size: 0.9rem;
}

input[type="text"],
input[type="number"],
input[type="time"],
select,
textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--gray);
    border-radius: 5px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-green);
}

/* Buttons */
.btn-primary {
    background: var(--primary-green);
    color: var(--black);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 5px;
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 1rem;
}

.btn-primary:hover:not(:disabled) {
    background: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(156, 205, 50, 0.4);
}

.btn-primary:disabled {
    background: var(--gray);
    color: #999;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Footer */
.footer {
    background: var(--black);
    color: var(--white);
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .week-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 900px) {
    .project-item-header {
        grid-template-columns: 1fr 1fr;
    }
    .tijd-row {
        grid-template-columns: 1fr 1fr;
    }
    .week-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    .project-item-header {
        grid-template-columns: 1fr;
    }
    .tijd-row {
        grid-template-columns: 1fr;
    }
    .week-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .company-name {
        font-size: 1.4rem;
    }
    .dag-header {
        flex-direction: column;
        align-items: stretch;
    }
    .tabs-container {
        justify-content: center;
    }
}