:root {
    --teal: #008F81;
    --magenta: #832472;
    --white: #ffffff;
    --gray-light: #f5f7f9;
    --gray-medium: #e0e6ed;
    --text-dark: #2c3e50;
    --text-light: #7f8c8d;
    --radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--gray-light);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
}

.app-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    margin-bottom: 40px;
}

.logo {
    font-size: 24px;
    font-family: 'Montserrat', sans-serif;
}

.logo .teal { color: var(--teal); }
.logo .magenta { color: var(--magenta); }

.progress-container {
    flex: 1;
    max-width: 300px;
    height: 8px;
    background: var(--gray-medium);
    border-radius: 4px;
    margin-left: 20px;
    overflow: hidden;
}

.progress-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--teal), var(--magenta));
    transition: width 0.5s ease;
}

main {
    flex: 1;
    position: relative;
}

.step {
    display: none;
    animation: fadeIn 0.5s ease;
}

.step.active {
    display: block;
}

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

/* Step 0: Initial Screen */
.hero {
    text-align: center;
    margin-bottom: 60px;
}

.hero h1 {
    font-size: 42px;
    color: var(--teal);
    margin-bottom: 20px;
}

.hero p {
    font-size: 18px;
    color: var(--text-light);
}

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

.btn-option {
    background: var(--white);
    border: 2px solid var(--gray-medium);
    border-radius: var(--radius);
    padding: 40px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    box-shadow: var(--shadow);
}

.btn-option:hover {
    border-color: var(--teal);
    transform: translateY(-5px);
}

.btn-option .icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.btn-option .text {
    font-size: 20px;
    font-weight: 600;
}

/* Step Headers */
.step-header {
    text-align: center;
    margin-bottom: 40px;
}

.step-header h2 {
    font-size: 32px;
    color: var(--magenta);
}

/* Forms */
.form-grid {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
}

.input-group.full {
    grid-column: 1 / -1;
}

label {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-dark);
}

input, select {
    padding: 12px 16px;
    border: 1px solid var(--gray-medium);
    border-radius: 8px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

input:focus, select:focus {
    border-color: var(--teal);
}

small {
    font-size: 12px;
    color: var(--text-light);
    margin-top: 4px;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Buttons */
.actions {
    display: flex;
    justify-content: flex-end;
    gap: 15px;
    margin-top: 20px;
}

.btn-primary, .btn-secondary {
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--teal), #00b894);
    color: var(--white);
}

.btn-primary:hover {
    filter: brightness(1.1);
    box-shadow: 0 5px 15px rgba(0, 143, 129, 0.3);
}

.btn-secondary {
    background: var(--gray-medium);
    color: var(--text-dark);
}

/* Calculator */
.calc-container {
    background: var(--white);
    padding: 40px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    max-width: 600px;
    margin: 0 auto;
}

.results-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 30px 0;
}

.result-card {
    background: var(--gray-light);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}

.result-card.highlight {
    background: linear-gradient(135deg, var(--teal), var(--magenta));
    color: var(--white);
}

.result-card h3 {
    font-size: 14px;
    margin-bottom: 10px;
}

.result-card .value {
    font-size: 24px;
    font-weight: 700;
}

.disclaimer {
    font-size: 12px;
    color: var(--text-light);
    text-align: center;
    margin-bottom: 20px;
}

/* Success Card */
.success-card {
    text-align: center;
    background: var(--white);
    padding: 60px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.icon-success {
    width: 80px;
    height: 80px;
    background: #2ecc71;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
    margin: 0 auto 30px;
}

@media (max-width: 768px) {
    .app-container {
        padding: 15px;
    }

    header {
        flex-direction: column;
        gap: 15px;
        margin-bottom: 30px;
    }

    .progress-container {
        margin-left: 0;
        width: 100%;
        max-width: 100%;
    }

    .hero h1 {
        font-size: 28px;
    }

    .hero p {
        font-size: 16px;
    }

    .options, .form-grid, .results-grid {
        grid-template-columns: 1fr;
    }

    .btn-option {
        padding: 30px 20px;
    }

    .form-grid, .calc-container, .success-card {
        padding: 25px 20px;
    }

    .step-header h2 {
        font-size: 26px;
    }

    .actions {
        flex-direction: column-reverse;
        width: 100%;
    }

    .btn-primary, .btn-secondary {
        width: 100%;
        text-align: center;
    }

    .result-card .value {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 24px;
    }
    
    .logo {
        font-size: 20px;
    }
}