/* Dark Green and Black Color Palette */
:root {
    --bg-primary: #0a0e0d;
    --bg-secondary: #111816;
    --bg-card: #1a2420;
    --accent-green: #2d5a3d;
    --accent-green-light: #3a7350;
    --accent-green-dark: #1e3d29;
    --text-primary: #e8f5e9;
    --text-secondary: #a5d6a7;
    --text-muted: #7a9d7f;
    --border-color: #2d5a3d;
    --highlight: #4caf50;
    --highlight-net: #66bb6a;
    --error: #ef5350;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
    line-height: 1.6;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
}

header {
    text-align: center;
    margin-bottom: 40px;
    padding: 30px 20px;
    background: var(--bg-card);
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
}

header h1 {
    font-size: 2.5em;
    color: var(--text-primary);
    margin-bottom: 10px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1.2em;
}

.calculator-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.1em;
}

.section-label {
    display: block;
    margin-bottom: 20px;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 1.2em;
    text-align: center;
}

/* Role Cards Styling */
.role-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 25px;
}

.role-cards input[type="radio"] {
    display: none;
}

.role-card {
    position: relative;
    background: var(--bg-secondary);
    border: 3px solid var(--border-color);
    border-radius: 12px;
    padding: 20px 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-height: 120px;
    justify-content: center;
}

.role-card:hover {
    border-color: var(--accent-green-light);
    background: var(--accent-green-dark);
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(76, 175, 80, 0.3);
}

.role-cards input[type="radio"]:checked + .role-card {
    border-color: var(--highlight);
    background: linear-gradient(135deg, var(--accent-green-dark) 0%, var(--accent-green) 100%);
    box-shadow: 0 0 0 4px rgba(76, 175, 80, 0.2);
}

.role-icon {
    font-size: 2.2em;
    margin-bottom: 3px;
}

.role-title {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.95em;
    line-height: 1.2;
}

.role-check {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 30px;
    height: 30px;
    background: var(--highlight);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2em;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s ease;
}

.role-cards input[type="radio"]:checked + .role-card .role-check {
    opacity: 1;
    transform: scale(1);
}

.form-group select,
.form-group input[type="number"],
.form-group input[type="text"] {
    width: 100%;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1em;
    transition: all 0.3s ease;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--highlight);
    box-shadow: 0 0 0 3px rgba(76, 175, 80, 0.2);
}

.form-group select option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.btn-calculate {
    width: 100%;
    padding: 18px;
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-light) 100%);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.2em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.btn-calculate:hover {
    background: linear-gradient(135deg, var(--accent-green-light) 0%, var(--highlight) 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(76, 175, 80, 0.4);
}

.btn-calculate:active {
    transform: translateY(0);
}

.results-container {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 15px;
    border: 2px solid var(--border-color);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
    margin-bottom: 30px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.results-header {
    text-align: center;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
}

.results-header h2 {
    color: var(--text-primary);
    font-size: 1.8em;
    margin-bottom: 10px;
}

.role-name {
    color: var(--highlight);
    font-size: 1.3em;
    font-weight: 600;
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.summary-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
}

.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.3);
}

.summary-card.highlight {
    background: linear-gradient(135deg, var(--accent-green-dark) 0%, var(--accent-green) 100%);
    border-color: var(--highlight);
}

.summary-card.highlight-net {
    background: linear-gradient(135deg, var(--accent-green) 0%, var(--accent-green-light) 100%);
    border-color: var(--highlight-net);
}

.summary-card .label {
    color: var(--text-muted);
    font-size: 0.9em;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.summary-card .value {
    color: var(--text-primary);
    font-size: 1.3em;
    font-weight: 700;
}

.summary-card .value.large {
    font-size: 1.6em;
    color: var(--highlight-net);
}

.installments-section {
    margin-bottom: 40px;
}

.installments-section h3 {
    color: var(--text-primary);
    font-size: 1.5em;
    margin-bottom: 10px;
}

.installments-subtitle {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 1.1em;
}

.installment-row {
    display: grid;
    grid-template-columns: 150px 1fr 1fr;
    gap: 20px;
    padding: 15px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border-left: 4px solid var(--accent-green);
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.installment-row:hover {
    background: var(--accent-green-dark);
    border-left-color: var(--highlight);
}

.installment-month {
    color: var(--text-secondary);
    font-weight: 600;
}

.installment-amount {
    color: var(--text-primary);
}

.installment-amount span {
    color: var(--highlight);
    font-weight: 700;
}

.explanation-section {
    background: var(--bg-secondary);
    padding: 25px;
    border-radius: 10px;
    border: 2px solid var(--border-color);
    margin-bottom: 20px;
}

.explanation-section h3 {
    color: var(--text-primary);
    font-size: 1.3em;
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--border-color);
}

.explanation-section h4 {
    color: var(--text-secondary);
    font-size: 1.1em;
    margin-top: 0;
    margin-bottom: 10px;
}

.explanation-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.explanation-content > p {
    color: var(--text-primary);
    margin-bottom: 15px;
    line-height: 1.6;
    font-size: 0.95em;
}

.explanation-content strong {
    color: var(--highlight);
}

.explanation-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.calculation-steps,
.payment-schedule {
    background: var(--bg-card);
    padding: 15px;
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.calculation-steps ul,
.payment-schedule ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.calculation-steps li,
.payment-schedule li {
    color: var(--text-primary);
    padding: 8px 12px;
    margin-bottom: 6px;
    background: var(--bg-secondary);
    border-radius: 6px;
    border-left: 4px solid var(--accent-green);
    font-size: 0.9em;
}

.calculation-steps li:last-child,
.payment-schedule li:last-child {
    margin-bottom: 0;
}

.calculation-steps li span,
.payment-schedule li span {
    color: var(--highlight);
    font-weight: 600;
}

.highlight-text {
    background: var(--accent-green-dark);
    padding: 15px;
    border-radius: 8px;
    border: 2px solid var(--accent-green);
    margin-top: 15px;
    text-align: center;
}

.highlight-text strong {
    color: var(--highlight-net);
    font-size: 1.2em;
}

.georgian {
    border-color: var(--accent-green-light);
}

.error-message {
    background: var(--error);
    color: white;
    padding: 18px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    text-align: center;
    font-weight: 700;
    font-size: 1.1em;
    border: 3px solid #d32f2f;
    box-shadow: 0 4px 12px rgba(239, 83, 80, 0.4);
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Input with Icon Styling */
.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.input-icon {
    position: absolute;
    left: 15px;
    font-size: 1.5em;
    pointer-events: none;
    z-index: 1;
}

.input-wrapper input {
    padding-left: 50px !important;
}

/* Checkbox Styling */
.checkbox-group {
    margin-bottom: 25px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 15px;
    background: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.checkbox-label:hover {
    border-color: var(--accent-green-light);
    background: var(--accent-green-dark);
}

.checkbox-label input[type="checkbox"] {
    width: 24px;
    height: 24px;
    margin-right: 12px;
    cursor: pointer;
    accent-color: var(--highlight);
}

.checkbox-text {
    color: var(--text-primary);
    font-size: 1em;
}

/* Button Animation */
.btn-calculate {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.btn-emoji {
    font-size: 1.3em;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    10% {
        transform: translateY(-10px) rotate(-10deg);
    }
    40% {
        transform: translateY(-8px) rotate(10deg);
    }
    60% {
        transform: translateY(-5px) rotate(-5deg);
    }
}

@media (max-width: 768px) {
    header h1 {
        font-size: 2em;
    }

    .calculator-card,
    .results-container {
        padding: 25px;
    }

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

    .installment-row {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .role-cards {
        grid-template-columns: 1fr;
    }

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