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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --text-color: #1e293b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    flex: 1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: var(--card-background);
    box-shadow: var(--shadow);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 1.5rem;
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: var(--primary-color);
}

.user-email {
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.btn-odjava {
    background-color: var(--error-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.btn-odjava:hover {
    background-color: #dc2626;
}

.btn-registracija {
    background-color: var(--primary-color);
    color: white !important;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: background-color 0.3s;
}

.btn-registracija:hover {
    background-color: #1d4ed8;
}


.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #475569;
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #059669;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: 6px;
    margin: 1rem 0;
    animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.alert-success {
    background-color: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success-color);
}

.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--error-color);
}

.alert-warning {
    background-color: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning-color);
}


.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 0;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.hero-buttons .btn {
    min-width: 150px;
}

/* Features Section */
.features {
    padding: 4rem 0;
}

.features h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}


.auth-container {
    min-height: calc(100vh - 200px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem 0;
}

.auth-card {
    background-color: var(--card-background);
    padding: 2.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 450px;
}

.auth-card h2 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.auth-info {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    font-size: 0.9rem;
}

.auth-footer {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.auth-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}


.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 100px;
}

.form-text {
    display: block;
    margin-top: 0.25rem;
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.form-container {
    padding: 2rem 0;
}

.form-card {
    background-color: var(--card-background);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 800px;
    margin: 0 auto;
}

.form-card h2 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.dashboard-container {
    padding: 2rem 0;
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.dashboard-header h1 {
    font-size: 2rem;
    color: var(--text-color);
}

.stats {
    display: flex;
    gap: 1.5rem;
}

.stat {
    background-color: var(--card-background);
    padding: 0.75rem 1.25rem;
    border-radius: 6px;
    box-shadow: var(--shadow);
    font-weight: 500;
}


.problems-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.problem-card {
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}

.problem-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.problem-card.status-na_cekanju {
    border-left: 4px solid var(--warning-color);
}

.problem-card.status-rijesen {
    border-left: 4px solid var(--success-color);
}

.problem-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 1rem;
}

.problem-header h3 {
    font-size: 1.25rem;
    color: var(--text-color);
    margin: 0;
    flex: 1;
}

.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
}

.status-badge.status-na_cekanju {
    background-color: #fef3c7;
    color: #92400e;
}

.status-badge.status-rijesen {
    background-color: #d1fae5;
    color: #065f46;
}

.problem-body {
    padding: 1.5rem;
}

.problem-body p {
    margin-bottom: 0.75rem;
}

.problem-image {
    margin: 1rem 0;
    border-radius: 6px;
    overflow: hidden;
}

.problem-image img {
    width: 100%;
    height: auto;
    max-height: 300px;
    object-fit: cover;
}

.problem-date {
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.problem-actions {
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.empty-state p {
    font-size: 1.25rem;
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
}


footer {
    background-color: var(--card-background);
    padding: 2rem 0;
    text-align: center;
    color: var(--secondary-color);
    margin-top: 4rem;
    box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
}



@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .nav-menu {
        flex-wrap: wrap;
        gap: 0.75rem;
        font-size: 0.875rem;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats {
        flex-wrap: wrap;
    }

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

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .auth-card {
        padding: 1.5rem;
    }
}