/**
 * Główny plik CSS dla Scrum Poker Online
 * scrumonline.eu
 * 
 * Kompatybilny z nowoczesnymi przeglądarkami
 * Responsive design, dark mode support
 */

/* ===== RESET I PODSTAWY ===== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Kolory główne - NOWA PALETA */
    --primary-color: #facc15;
    --primary-dark: #eab308;
    --primary-light: #fde047;
    --secondary-color: #38bdf8;
    --accent-color: #a855f7;
    --accent-dark: #8b5cf6;
    --accent-light: #c0b4e5;
    
    
    /* Kolory tła - Light Theme */
    --bg-primary: #f8fafc;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    --bg-card: #ffffff;
    
    /* Kolory tekstu - Light Theme */
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --text-inverse: #ffffff;
    
    /* Kolory statusów */
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Kolory granic */
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --border-dark: #cbd5e1;
    
    /* Cienie */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Rozmiary */
    --container-max-width: 1136px;
    --header-height: 70px;
    --footer-height: 200px;
    
    /* Fonty */
    --font-family-base: 'Inter', sans-serif;
    --font-family-mono: 'Fira Code', Consolas, 'Courier New', monospace;
    
    /* Rozmiary fontów */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    
    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    
    /* Border radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Dark mode - NOWA PALETA */
[data-theme="dark"] {
    --bg-primary: #0a0f19;
    --bg-secondary: #131a2b;
    --bg-tertiary: #1e293b;
    --bg-card: #1e293b;
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --border-color: #334155;
    --border-light: #475569;
    --border-dark: #64748b;
}

/* ===== PODSTAWOWE ELEMENTY ===== */
html {
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-4);
}

h1 { font-size: var(--text-4xl); }
h2 { font-size: var(--text-3xl); }
h3 { font-size: var(--text-2xl); }
h4 { font-size: var(--text-xl); }
h5 { font-size: var(--text-lg); }
h6 { font-size: var(--text-base); }

p {
    margin-bottom: var(--space-4);
    color: var(--text-secondary);
}

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

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

/* ===== LAYOUT ===== */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--space-6);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--space-8);
    }
}

/* ===== HEADER ===== */
.header {
    background-color: rgba(248, 250, 252, 0.25); /* Light mode: #f8fafc z 25% opacity */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px); /* Safari support */
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 9500; /* Nad przyciskami (10), pod tooltipami (200) i dropdownem (9999) */
    height: var(--header-height);
}

[data-theme="dark"] .header {
    background-color: rgba(10, 15, 25, 0.25); /* Dark mode: #0a0f19 z 25% opacity */
}

.navbar {
    height: 100%;
}

.navbar .container {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-brand {
    display: flex;
    align-items: center;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary-dark);
    text-decoration: none;
}

.brand-link:hover {
    color: var(--primary-dark);
    text-decoration: none;
}

.brand-icon {
    font-size: var(--text-2xl);
}

.brand-icon img,
img.brand-icon {
    height: 48px;
    width: auto;
    display: block;
}

.navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.nav-link {
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: var(--bg-secondary);
    text-decoration: none;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.user-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.user-name {
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: var(--text-lg);
    padding: var(--space-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.theme-toggle:hover {
    background-color: var(--bg-secondary);
}

/* Mobile menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 3px;
    background: none;
    border: none;
    padding: var(--space-2);
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background-color: var(--text-primary);
    transition: all var(--transition-fast);
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    .navbar-menu {
        display: none;
    }
    
    .navbar-menu.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-card);
        border-bottom: 1px solid var(--border-color);
        flex-direction: column;
        padding: var(--space-4);
        gap: var(--space-4);
    }
    
    .navbar-nav {
        flex-direction: column;
        gap: var(--space-2);
        width: 100%;
    }
    
    .nav-link {
        display: block;
        width: 100%;
        text-align: left;
    }
}

/* ===== MAIN CONTENT ===== */
.main {
    flex: 1;
    min-height: calc(100vh - var(--header-height) - var(--footer-height));
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-size: var(--text-base);
    font-weight: 500;
    line-height: 1;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

/* Elementy wewnątrz przycisków nie blokują kliknięć */
.btn > * {
    pointer-events: none;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button sizes */
.btn-sm {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
}

.btn-lg {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-lg);
}

/* Button variants */
.btn-primary {
    background-color: var(--primary-dark);
    color: #1a1a1a;
    border-color: var(--primary-dark);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #1a1a1a;
    text-decoration: none;
}

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

.btn-outline:hover:not(:disabled) {
    background-color: var(--primary-color);
    color: #1a1a1a;
    text-decoration: none;
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--text-inverse);
    border-color: var(--secondary-color);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--text-primary);
    border-color: var(--text-primary);
    color: var(--text-inverse);
    text-decoration: none;
}

.btn-success {
    background-color: var(--success-color);
    color: var(--text-inverse);
    border-color: var(--success-color);
}

.btn-warning {
    background-color: var(--warning-color);
    color: var(--text-inverse);
    border-color: var(--warning-color);
}

.btn-error {
    background-color: var(--error-color);
    color: var(--text-inverse);
    border-color: var(--error-color);
}

/* ===== FORMS ===== */
.form-group {
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-weight: 500;
    margin-bottom: var(--space-2);
    color: var(--text-primary);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-3);
    font-size: var(--text-base);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgb(37 99 235 / 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-error {
    color: var(--error-color);
    font-size: var(--text-sm);
    margin-top: var(--space-1);
}

/* ===== ALERTS ===== */
.flash-messages {
    position: sticky;
    top: var(--header-height);
    z-index: 10000; /* Najwyższy priorytet - nad headerem (9500) i wszystkimi elementami */
}

.alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    margin-bottom: var(--space-4);
    border-radius: var(--radius-lg);
    font-weight: 500;
}

.alert-success {
    background-color: rgb(16 185 129 / 0.1);
    color: var(--success-color);
    border: 1px solid rgb(16 185 129 / 0.2);
}

.alert-error {
    background-color: rgb(239 68 68 / 0.1);
    color: var(--error-color);
    border: 1px solid rgb(239 68 68 / 0.2);
}

.alert-warning {
    background-color: rgb(245 158 11 / 0.1);
    color: var(--warning-color);
    border: 1px solid rgb(245 158 11 / 0.2);
}

.alert-info {
    background-color: rgb(59 130 246 / 0.1);
    color: var(--info-color);
    border: 1px solid rgb(59 130 246 / 0.2);
}

.alert-close {
    background: none;
    border: none;
    font-size: var(--text-lg);
    cursor: pointer;
    margin-left: auto;
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}

.alert-close:hover {
    opacity: 1;
}

/* ===== FOOTER ===== */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

.footer-section {
    max-width: 100%;
}

.footer-section:first-child {
    max-width: 500px;
}

.footer-section h4 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-4);
    color: var(--text-primary);
}

.footer-section p {
    color: var(--text-secondary);
    margin-bottom: var(--space-2);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--space-2);
    color: var(--text-secondary);
}

.footer-links a {
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

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

.footer-section:first-child .footer-links a {
    color: inherit;
    text-decoration: none;
}

.footer-section:first-child .footer-links a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.tech-info {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--space-8);
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: var(--text-sm);
    margin: 0;
}

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

.hidden { display: none !important; }
.visible { display: block !important; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== LOADING STATES ===== */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.2),
        transparent
    );
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* ===== RESPONSIVE HELPERS ===== */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .hidden-mobile { display: none !important; }
}

@media (min-width: 641px) {
    .hidden-desktop { display: none !important; }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: var(--text-primary);
    }
}