@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --bg-main: #0B0B0C;
    --bg-secondary: #151518;
    --bg-elevated: #1F1F23;
    --primary: #FFFFFF;
    --secondary-text: #A1A1AA;
    --dark-accent: #2A2A30;
    --highlight: #FFFFFF;
    --highlight-hover: #E2E2E9;
    --highlight-text: #0B0B0C;
    --disabled: #6B6B75;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --btn-gradient: linear-gradient(180deg, #F0F0F5 0%, #E2E2E9 100%);
    --btn-shadow: 0px 4px 12px rgba(0, 0, 0, 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--primary);
    min-height: 100vh;
    overflow-x: hidden;
}

h1, h2, h3 { font-weight: 600; letter-spacing: -0.02em; }
p { color: var(--secondary-text); line-height: 1.6; }

.dashboard-layout {
    display: flex;
    min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
    width: 280px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--dark-accent);
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.sidebar-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 40px;
    padding: 0 10px;
}

.sidebar-logo {
    width: 32px;
    height: 32px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--secondary-text);
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
}

.nav-item:hover {
    background: var(--bg-elevated);
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary);
    color: var(--bg-main);
}

.nav-item.active i, .nav-item.active svg {
    color: var(--bg-main);
}

.sidebar-footer {
    padding-top: 20px;
    border-top: 1px solid var(--dark-accent);
}

/* --- Main Content --- */
.main-content {
    flex-grow: 1;
    margin-left: 280px;
    padding: 40px 60px;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 20px;
}

.grid {
    display: grid;
    gap: 24px;
}

/* --- Cards & Layout --- */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--dark-accent);
    border-radius: 12px;
    padding: 32px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card:hover { border-color: var(--secondary-text); }

/* --- Tlačítka --- */
.btn {
    background: var(--btn-gradient);
    color: var(--highlight-text);
    border: none;
    border-radius: 4px;
    padding: 12px 24px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-decoration: none;
    position: relative;
    box-shadow: var(--btn-shadow);
    z-index: 1;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: var(--highlight-hover);
    opacity: 0;
    transition: var(--transition);
    z-index: -1;
    border-radius: 4px;
}

.btn:hover::before { opacity: 1; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(0,0,0,0.2); }
.btn:active { transform: translateY(0); }
.btn:disabled { background: var(--disabled) !important; cursor: not-allowed; transform: none !important; color: var(--bg-main); box-shadow: none; }

.btn-secondary {
    background: var(--bg-elevated);
    color: var(--primary);
    border: 1px solid var(--dark-accent);
}

.btn-secondary:hover {
    background: #323238;
    border-color: var(--secondary-text);
    transform: translateY(-2px);
}

.btn-secondary:hover::before {
    opacity: 0;
}

/* --- Login FULLSCREEN --- */
#login-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: var(--bg-main);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

#login-overlay.active { display: flex; }

.login-container {
    width: 100%;
    max-width: 420px;
    padding: 40px;
    text-align: center;
}

/* --- Inputy --- */
.input-wrapper {
    position: relative;
    margin-bottom: 20px;
    text-align: left;
}

input, select, textarea {
    width: 100%;
    background: var(--bg-secondary);
    border: 1px solid var(--dark-accent);
    border-radius: 4px;
    padding: 14px 16px;
    color: var(--primary);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23A1A1AA' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 18px;
    padding-right: 40px !important;
}

input:focus, select:focus, textarea:focus { border-color: var(--highlight); background: var(--bg-elevated); }

/* --- Custom Checkbox --- */
input[type="checkbox"] {
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--dark-accent);
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    margin: 0;
}

input[type="checkbox"]:checked {
    background: var(--primary);
    border-color: var(--primary);
}

input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid var(--bg-main);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* --- Input with Icon --- */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group i, .input-group svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--secondary-text);
    pointer-events: none;
    transition: var(--transition);
    z-index: 5;
}

.input-group input {
    padding-left: 48px;
}

.input-group input:focus + i {
    color: var(--highlight);
}

/* --- Browser Autofill Styling --- */
input:-webkit-autofill,
input:-webkit-autofill:hover, 
input:-webkit-autofill:focus,
input:-webkit-autofill:active {
    -webkit-box-shadow: 0 0 0 30px var(--bg-secondary) inset !important;
    -webkit-text-fill-color: var(--primary) !important;
    transition: background-color 5000s ease-in-out 0s;
}

label {
    display: block;
    margin-bottom: 10px;
    color: var(--secondary-text);
    font-size: 0.9rem;
    font-weight: 500;
}

/* --- Loader --- */
.loader {
    width: 18px;
    height: 18px;
    border: 2px solid rgba(0,0,0,0.2);
    border-radius: 50%;
    border-top-color: var(--bg-main);
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* --- Skeleton --- */
.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-elevated) 50%, var(--bg-secondary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: 4px;
}

@keyframes skeleton-loading { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }

/* --- Modaly (zůstávají pro ostatní věci) --- */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.modal-overlay.active { display: flex; }

.modal-box {
    background: var(--bg-elevated);
    border: 1px solid var(--dark-accent);
    border-radius: 4px;
    padding: 40px;
    width: 100%;
    max-width: 500px;
}

/* --- Branding in Header --- */
.brand-title {
    display: flex;
    align-items: center;
    gap: 15px;
}

.brand-logo {
    width: 32px;
    height: 32px;
    object-fit: contain;
}

/* --- Lucide Icon Fixes --- */
i[data-lucide] {
    width: 20px;
    height: 20px;
    stroke-width: 2;
}

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-main); }
::-webkit-scrollbar-thumb { background: var(--dark-accent); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--secondary-text); }