/* ============================================
   PLASTIC PARTY PŘEROV - MAIN STYLESHEET
   ============================================ */

/* ========== CSS VARIABLES ========== */
:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    --text-dark: #1e293b;
    --text-light: #64748b;
    --bg-white: #ffffff;
    --bg-gray: #f8fafc;
    --border-color: #e2e8f0;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    
    --radius: 8px;
    --transition: all 0.3s ease;
}

/* ========== RESET & BASE ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-gray);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

/* ========== NAVIGATION ========== */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow-sm);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 1200;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0;
}

.navbar-brand img {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1); /* Bílé logo na tmavém pozadí */
    transition: all 0.3s;
}

.navbar-brand:hover img {
    filter: brightness(0) invert(1) drop-shadow(0 0 8px rgba(255,255,255,0.5));
    transform: scale(1.05);
}

/* Skryjeme text pokud je logo */
.navbar-brand.has-logo span {
    display: none;
}

.navbar-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.navbar-menu a {
    color: var(--text-light);
    font-weight: 500;
    transition: var(--transition);
}

.navbar-menu a:hover,
.navbar-menu a.active {
    color: var(--primary-color);
}

.navbar-actions {
    display: flex;
    gap: 1rem;
}

/* ========== CONTAINER ========== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.container-fluid {
    width: 100%;
    padding: 0 1rem;
}

/* ========== SECTIONS ========== */
.section {
    padding: 3rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-light);
}

/* ========== HERO SECTION ========== */
.hero {
    background: linear-gradient(135deg, var(--primary-color), #7c3aed);
    color: white;
    padding: 5rem 0;
    text-align: center;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

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

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

/* ========== CARDS ========== */
.card {
    background-color: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.card-header {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-dark);
}

.card-body {
    color: var(--text-light);
}

.card-footer {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* ========== BUTTONS ========== */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-hover);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: #475569;
}

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

.btn-success:hover:not(:disabled) {
    background-color: #059669;
}

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

.btn-danger:hover:not(:disabled) {
    background-color: #dc2626;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: white;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* ========== FORMS ========== */
.form-group {
    margin-bottom: 1.5rem;
}

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

.form-label.required::after {
    content: " *";
    color: var(--danger-color);
}

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

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

.form-control:disabled {
    background-color: var(--bg-gray);
    cursor: not-allowed;
}

select.form-control {
    cursor: pointer;
}

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

.form-error {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.form-help {
    color: var(--text-light);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

/* ========== TABLE ========== */
.table-container {
    overflow-x: auto;
    background-color: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background-color: var(--bg-gray);
}

th {
    padding: 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-dark);
    border-bottom: 2px solid var(--border-color);
}

td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
}

tr:last-child td {
    border-bottom: none;
}

tr:hover {
    background-color: var(--bg-gray);
}

/* ========== BADGES ========== */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.badge-primary {
    background-color: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.badge-success {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.badge-danger {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.badge-warning {
    background-color: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

/* ========== NOTIFICATIONS ========== */
.notification {
    position: fixed;
    top: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    color: white;
    font-weight: 500;
    opacity: 0;
    transform: translateX(100%);
    transition: var(--transition);
    z-index: 9999;
}

.notification.show {
    opacity: 1;
    transform: translateX(0);
}

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

.notification-danger {
    background-color: var(--danger-color);
}

.notification-warning {
    background-color: var(--warning-color);
}

.notification-info {
    background-color: var(--info-color);
}

/* ========== GRID ========== */
.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========== UTILITIES ========== */
.text-center {
    text-align: center;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex {
    display: flex;
}

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

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }

/* ========== HAMBURGER MENU ========== */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 32px;
    height: 32px;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
    border-radius: 4px;
    transition: background 0.2s;
}

.hamburger:hover {
    background: rgba(255, 255, 255, 0.1);
}

.hamburger span {
    display: block;
    width: 100%;
    height: 3px;
    background: white;
    border-radius: 3px;
    transition: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    transform-origin: center;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 968px) {
    .hamburger {
        display: flex;
        position: relative;
        z-index: 1002;
    }
    
    /* Hamburger jako X když je menu otevřené - fixní pozice */
    .hamburger.active {
        position: fixed;
        top: 1rem;
        right: 1rem;
    }
    
    .navbar-menu {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100vh;
        background: linear-gradient(135deg, rgba(26, 26, 46, 0.98) 0%, rgba(22, 33, 62, 0.98) 100%);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 1.5rem;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: all 0.3s ease;
        z-index: 1000;
    }
    
    .navbar-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }
    
    .navbar-menu li {
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.3s ease;
        list-style: none;
    }
    
    .navbar-menu.active li {
        opacity: 1;
        transform: translateY(0);
    }
    
    .navbar-menu.active li:nth-child(1) { transition-delay: 0.1s; }
    .navbar-menu.active li:nth-child(2) { transition-delay: 0.15s; }
    .navbar-menu.active li:nth-child(3) { transition-delay: 0.2s; }
    .navbar-menu.active li:nth-child(4) { transition-delay: 0.25s; }
    .navbar-menu.active li:nth-child(5) { transition-delay: 0.3s; }
    .navbar-menu.active li:nth-child(6) { transition-delay: 0.35s; }
    
    .navbar-menu a {
        font-size: 1.5rem;
        padding: 0.75rem 1.5rem;
        display: block;
        text-align: center;
        border-radius: 8px;
        transition: all 0.2s;
        color: rgba(255,255,255,0.9);
    }
    
    .navbar-menu a:hover {
        background: rgba(93, 138, 168, 0.2);
        color: white;
    }
    
    .navbar-menu a.active {
        color: #e67e22;
        background: rgba(230, 126, 34, 0.15);
    }
    
    .navbar-actions {
        display: none;
    }
    
    .navbar-actions.mobile-visible {
        position: fixed;
        bottom: 3rem;
        left: 50%;
        transform: translateX(-50%);
        display: flex;
        gap: 1rem;
        z-index: 1001;
        opacity: 0;
        animation: fadeInUp 0.3s ease forwards;
        animation-delay: 0.4s;
    }
    
    @keyframes fadeInUp {
        from {
            opacity: 0;
            transform: translateX(-50%) translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateX(-50%) translateY(0);
        }
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .navbar .container {
        padding: 0.5rem 1rem;
    }
    
    .navbar-brand img {
        height: 45px;
    }
    
    .hamburger.active {
        top: 0.75rem;
        right: 0.75rem;
    }
    
    .navbar-menu {
        gap: 1rem;
    }
    
    .navbar-menu a {
        font-size: 1.25rem;
        padding: 0.5rem 1rem;
    }
    
    .navbar-actions.mobile-visible {
        bottom: 2rem;
        flex-direction: column;
        width: calc(100% - 2rem);
        left: 1rem;
        transform: none;
        animation-name: fadeInUpMobile;
    }
    
    @keyframes fadeInUpMobile {
        from {
            opacity: 0;
            transform: translateY(20px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    .navbar-actions.mobile-visible .btn {
        width: 100%;
        text-align: center;
    }
}

/* ========== LOADING SPINNER ========== */
.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}