/* --- GENERAL & VARIABLES --- */
:root {
    --primary-green: #2ECC71;
    --primary-blue: #3498DB;
    --dark-blue: #2c3e50;
    --light-grey: #f4f7f6;
    --medium-grey: #dfe6e9;
    --white: #ffffff;
    --text-color: #34495e;
    --text-light: #7f8c8d;
    --gradient: linear-gradient(135deg, var(--primary-blue), var(--primary-green));
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.07);
    --border-radius: 12px;
}

body {
    font-family: 'Poppins', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    background-color: var(--light-grey);
    scroll-behavior: smooth;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

h2 {
    text-align: center;
    font-size: 2.2rem;
    margin-bottom: 40px;
    color: var(--dark-blue);
    font-weight: 600;
}
h3 {
    color: var(--dark-blue);
    font-weight: 600;
}

/* --- HEADER --- */
header {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.3rem;
    font-weight: 700;
    text-decoration: none;
    color: var(--dark-blue);
}

.logo .material-icons {
    font-size: 2rem;
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.lang-selector select {
    border: 1px solid var(--medium-grey);
    padding: 8px 12px;
    border-radius: 6px;
    background-color: var(--white);
    font-family: 'Poppins', sans-serif;
}

/* --- CALCULATOR WIZARD --- */
#calculator-wizard {
    background-color: var(--white);
    padding: 40px;
    margin: 40px 0;
    border-radius: var(--border-radius);
    box-shadow: var(--card-shadow);
}

.calculator-step {
    display: none;
}
.calculator-step.active {
    display: block;
}

/* Step Indicators */
.step-indicator-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 50px;
}
.step-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 120px;
    color: var(--text-light);
    transition: all 0.3s ease;
}
.step-indicator-line {
    flex-grow: 1;
    height: 2px;
    background-color: var(--medium-grey);
    margin: 20px 0 0 0;
}
.step-icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--medium-grey);
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--white);
    transition: all 0.3s ease;
}
.step-indicator p {
    font-size: 0.9rem;
    font-weight: 600;
    margin-top: 10px;
}
.step-indicator.active .step-icon-wrapper {
    background: var(--gradient);
}
.step-indicator.active p {
    color: var(--dark-blue);
}

/* --- FORMS --- */
.form-group {
    margin-bottom: 25px;
}
.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}
.input-wrapper {
    position: relative;
}
.input-wrapper .material-icons {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
}
.form-group input, .form-group select {
    width: 100%;
    padding: 12px 15px 12px 50px;
    border: 1px solid var(--medium-grey);
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    box-sizing: border-box; /* Important for width calculation */
}
.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-blue);
}
.help-text {
    display: block;
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* --- BUTTONS --- */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--gradient);
    color: var(--white);
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    border: none;
    font-size: 1rem;
    cursor: pointer;
}
.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}
.cta-button.secondary {
    background: var(--white);
    color: var(--text-color);
    border: 1px solid var(--medium-grey);
}
.navigation-buttons {
    display: flex;
    justify-content: space-between;
    margin-top: 40px;
    border-top: 1px solid var(--light-grey);
    padding-top: 30px;
}

/* --- LIVESTOCK INVENTORY --- */
#livestock-inventory {
    margin-top: 40px;
    background-color: var(--light-grey);
    padding: 20px;
    border-radius: var(--border-radius);
}
#livestock-inventory h3 {
    margin-top: 0;
}
#inventory-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
#inventory-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid var(--medium-grey);
}
#inventory-list li:last-child {
    border-bottom: none;
}
.remove-animal-btn {
    background: none;
    border: none;
    color: #e74c3c;
    cursor: pointer;
    font-size: 1.5rem;
}

/* --- RESULTS --- */
#results-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}
.result-card {
    background-color: var(--light-grey);
    padding: 25px;
    border-radius: var(--border-radius);
    border-left: 5px solid;
}
.result-card.supply { border-color: var(--primary-green); }
.result-card.demand { border-color: var(--primary-blue); }
.result-card.balance { border-color: var(--dark-blue); }

.result-header {
    display: flex;
    align-items: center;
    gap: 10px;
}
.result-header h3 {
    margin: 0;
    font-size: 1rem;
}
.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 10px 0;
    color: var(--dark-blue);
}
#recommendation-card {
    padding: 25px;
    border-radius: var(--border-radius);
    margin-top: 20px;
    transition: all 0.5s ease;
}
#recommendation-card.surplus { background-color: #e8f5e9; border: 1px solid #a5d6a7; }
#recommendation-card.deficit { background-color: #ffcdd2; border: 1px solid #ef9a9a; }
#recommendation-card.balanced { background-color: #e3f2fd; border: 1px solid #90caf9; }
#recommendation-text {
    font-size: 1.1rem;
    line-height: 1.7;
}

/* --- FOOTER --- */
footer {
    text-align: center;
    padding: 40px 0;
    color: var(--text-light);
}

/* --- RESPONSIVENESS --- */
@media (max-width: 768px) {
    h2 { font-size: 1.8rem; }
    #calculator-wizard { padding: 20px; }
    .step-indicator p { font-size: 0.8rem; }
    .step-indicator-container { margin-bottom: 30px; }
    .navigation-buttons {
        flex-direction: column;
        gap: 15px;
    }
    .navigation-buttons button {
        width: 100%;
        justify-content: center;
    }
}