/* Reset i osnovni stilovi */

* {

    margin: 0;

    padding: 0;

    box-sizing: border-box;

}



body {

    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;

    line-height: 1.6;

    color: #333;

    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);

    min-height: 100vh;

}



.container {

    max-width: 1200px;

    margin: 0 auto;

    padding: 0 20px;

}



/* Header stilovi */

.main-header {

    background: rgba(255, 255, 255, 0.95);

    backdrop-filter: blur(10px);

    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);

    position: sticky;

    top: 0;

    z-index: 100;

}



.main-header .container {

    display: flex;

    justify-content: space-between;

    align-items: center;

    padding: 1rem 20px;

}



.main-header h1 {

    color: #2c3e50;

    font-size: 1.8rem;

}



/* Navigacija - Flexbox */

.main-nav ul {

    display: flex;

    list-style: none;

    gap: 2rem;

    flex-wrap: wrap;

}



.main-nav a {

    text-decoration: none;

    color: #34495e;

    font-weight: 500;

    padding: 0.5rem 1rem;

    border-radius: 25px;

    transition: all 0.3s ease;

}



.main-nav a:hover {

    background: #3498db;

    color: white;

    transform: translateY(-2px);

}



/* Main content */

.main-content {

    flex: 1;

    padding: 2rem 0;

}



/* Hero sekcija */

.hero-section {

    text-align: center;

    background: rgba(255, 255, 255, 0.95);

    border-radius: 20px;

    padding: 3rem;

    margin-bottom: 3rem;

    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);

}



.hero-section h2 {

    font-size: 2.5rem;

    color: #2c3e50;

    margin-bottom: 1rem;

}



.hero-description {

    font-size: 1.2rem;

    color: #7f8c8d;

    max-width: 800px;

    margin: 0 auto;

}



/* Features grid - Flexbox */

.features-grid {

    display: flex;

    gap: 2rem;

    flex-wrap: wrap;

    justify-content: center;

}



.feature-card {

    background: rgba(255, 255, 255, 0.95);

    padding: 2rem;

    border-radius: 15px;

    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);

    transition: transform 0.3s ease, box-shadow 0.3s ease;

    flex: 1;

    min-width: 280px;

    max-width: 350px;

    text-align: center;

}



.feature-card:hover {

    transform: translateY(-5px);

    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);

}



.feature-card h3 {

    color: #2c3e50;

    margin-bottom: 1rem;

    font-size: 1.3rem;

}



.feature-card p {

    color: #7f8c8d;

    margin-bottom: 1.5rem;

}



/* Gumbovi */

.btn {

    display: inline-block;

    padding: 12px 30px;

    background: linear-gradient(135deg, #3498db, #2980b9);

    color: white;

    text-decoration: none;

    border-radius: 25px;

    font-weight: 500;

    transition: all 0.3s ease;

    border: none;

    cursor: pointer;

    font-size: 1rem;

}



.btn:hover {

    transform: translateY(-2px);

    box-shadow: 0 8px 25px rgba(52, 152, 219, 0.4);

}



.btn-primary {

    background: linear-gradient(135deg, #e74c3c, #c0392b);

}



.btn-primary:hover {

    box-shadow: 0 8px 25px rgba(231, 76, 60, 0.4);

}



/* Page header */

.page-header {

    background: rgba(255, 255, 255, 0.95);

    padding: 2rem;

    border-radius: 15px;

    margin-bottom: 2rem;

    text-align: center;

    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);

}



.page-header h2 {

    color: #2c3e50;

    font-size: 2.2rem;

    margin-bottom: 1rem;

}



.page-header p {

    color: #7f8c8d;

    font-size: 1.1rem;

}



/* Calculator sekcija */

.calculator-section {

    background: rgba(255, 255, 255, 0.95);

    padding: 2rem;

    border-radius: 15px;

    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);

}



/* Forma - Flexbox */

.calculator-form {

    display: flex;

    flex-direction: column;

    gap: 1.5rem;

    margin-bottom: 2rem;

}



.form-group {

    display: flex;

    flex-direction: column;

}



.form-group label {

    font-weight: 600;

    color: #2c3e50;

    margin-bottom: 0.5rem;

}



.form-group input,

.form-group select {

    padding: 12px 15px;

    border: 2px solid #ecf0f1;

    border-radius: 8px;

    font-size: 1rem;

    transition: border-color 0.3s ease;

}



.form-group input:focus,

.form-group select:focus {

    outline: none;

    border-color: #3498db;

}



.checkbox-group {

    flex-direction: row !important;

    align-items: center;

}



.checkbox-group label {

    margin-bottom: 0;

    margin-left: 0.5rem;

    cursor: pointer;

}



/* Results sekcija */

.results-section {

    margin-top: 2rem;

    padding-top: 2rem;

    border-top: 2px solid #ecf0f1;

}



.results-section h3 {

    color: #2c3e50;

    margin-bottom: 2rem;

    text-align: center;

    font-size: 1.5rem;

}



.results-category {

    margin-bottom: 2rem;

}



.results-category h4 {

    color: #34495e;

    margin-bottom: 1rem;

    font-size: 1.2rem;

}



/* Results grid - Flexbox */

.results-grid {

    display: flex;

    gap: 1rem;

    flex-wrap: wrap;

    justify-content: center;

}



.result-card {

    background: #f8f9fa;

    padding: 1.5rem;

    border-radius: 10px;

    text-align: center;

    border-left: 4px solid #95a5a6;

    transition: transform 0.2s ease;

    flex: 1;

    min-width: 200px;

}



.result-card:hover {

    transform: translateY(-2px);

}



.result-card h4,

.result-card h5 {

    color: #2c3e50;

    margin-bottom: 0.5rem;

    font-size: 0.9rem;

    font-weight: 600;

}



.amount {

    font-size: 1.5rem;

    font-weight: bold;

    color: #2c3e50;

}



.result-card.positive {

    border-left-color: #27ae60;

    background: #d5f4e6;

}



.result-card.positive .amount {

    color: #27ae60;

}



.result-card.negative {

    border-left-color: #e74c3c;

    background: #faddd7;

}



.result-card.negative .amount {

    color: #e74c3c;

}



.result-card.large {

    flex-basis: 100%;

}



.result-card.large .amount {

    font-size: 2.5rem;

}



.result-card small {

    color: #7f8c8d;

    font-size: 0.8rem;

}



/* Info box */

.info-box {

    background: #e8f4f8;

    border: 1px solid #d6eaf8;

    border-radius: 8px;

    padding: 1.5rem;

    margin: 1.5rem 0;

}



.info-box.positive {

    background: #d5f4e6;

    border-color: #a9dfbf;

}



.info-box h4 {

    color: #2c3e50;

    margin-bottom: 1rem;

}



.info-box ul {

    margin-left: 1.5rem;

}



.info-box li {

    margin-bottom: 0.5rem;

    color: #34495e;

}



/* Footer */

.main-footer {

    background: rgba(255, 255, 255, 0.95);

    backdrop-filter: blur(10px);

    padding: 2rem 0;

    margin-top: 3rem;

}



.footer-content {

    display: flex;

    justify-content: space-between;

    align-items: center;

    flex-wrap: wrap;

    gap: 2rem;

}



.footer-info h3 {

    color: #2c3e50;

    margin-bottom: 0.5rem;

}



.footer-info p,

.footer-author p {

    color: #7f8c8d;

}



/* Responsive dizajn */

@media (max-width: 768px) {

    .main-header .container {

        flex-direction: column;

        gap: 1rem;

    }

    

    .main-nav ul {

        justify-content: center;

        gap: 1rem;

    }

    

    .hero-section {

        padding: 2rem 1rem;

    }

    

    .hero-section h2 {

        font-size: 2rem;

    }

    

    .features-grid {

        flex-direction: column;

        align-items: center;

    }

    

    .feature-card {

        max-width: 100%;

    }

    

    .results-grid {

        flex-direction: column;

    }

    

    .result-card {

        min-width: auto;

    }

    

    .footer-content {

        flex-direction: column;

        text-align: center;

    }

    

    .calculator-form {

        padding: 1rem;

    }

    

    .container {

        padding: 0 15px;

    }

}



@media (max-width: 480px) {

    .hero-section h2 {

        font-size: 1.5rem;

    }

    

    .page-header h2 {

        font-size: 1.8rem;

    }

    

    .amount {

        font-size: 1.2rem;

    }

    

    .result-card.large .amount {

        font-size: 2rem;

    }

}






.results-section {

    animation: fadeIn 0.5s ease-out;

}



/* Dodatne utility klase */

.text-center { text-align: center; }

.text-left { text-align: left; }

.text-right { text-align: right; }



.mb-1 { margin-bottom: 1rem; }

.mb-2 { margin-bottom: 2rem; }

.mt-1 { margin-top: 1rem; }

.mt-2 { margin-top: 2rem; }