:root {
    --bg-color: #050505;
    --card-bg: #121212;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #ffffff;
    --primary-hover: #e2e8f0;
    --primary-text: #050505;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --border-color: #262626;
    --sidebar-bg: #0a0a0a;
    --radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    
    --day-other-month: #0a0a0a;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
}

/* Logos */
.logo-img {
    height: 40px;
    width: auto;
    display: block;
}

.login-card .logo-img {
    height: 60px;
    margin: 0 auto 20px;
}

/* Login */
.login-body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: var(--bg-color);
    position: relative;
}
.login-container {
    width: 100%;
    display: flex;
    justify-content: center;
    padding: 20px;
}
.login-card {
    background: var(--card-bg);
    padding: 50px 40px;
    border-radius: var(--radius);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
    text-align: center;
    position: relative;
}
.login-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: var(--primary);
}
.logo-img {
    height: 45px;
    margin-bottom: 5px;
}
.subtitle {
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 5px;
    margin-bottom: 35px;
}

/* Forms */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-row {
    display: flex;
    gap: 15px;
}

.form-row .form-group {
    flex: 1;
}

label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-main);
    margin-bottom: 8px;
}

input[type="text"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="datetime-local"],
select,
textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    outline: none;
    transition: all 0.2s;
    background: #1a1a1a;
    color: var(--text-main);
    font-family: 'Outfit', sans-serif;
    color-scheme: dark;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--text-main);
    box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.2);
}

input[readonly], textarea[readonly] {
    background-color: #121212;
    cursor: not-allowed;
    border-color: var(--border-color);
    opacity: 0.7;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
}

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

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

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}

.btn-outline:hover {
    background-color: #262626;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: 50%;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
    font-size: 20px;
}

.btn-icon:hover {
    background-color: #262626;
}

.btn-block {
    width: 100%;
    padding: 14px;
}

/* Alerts */
.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.user-profile-mini {
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #333, #111);
    border: 1px solid #444;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 18px;
}

.avatar-large {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #333, #111);
    border: 1px solid #444;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 32px;
    margin: 0 auto 15px;
}

.user-info h4 {
    font-size: 14px;
    margin-bottom: 4px;
}

.role-badge {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 600;
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.role-admin {
    background-color: rgba(168, 85, 247, 0.15);
    color: #d8b4fe;
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.role-user {
    background-color: rgba(56, 189, 248, 0.15);
    color: #7dd3fc;
    border: 1px solid rgba(56, 189, 248, 0.3);
}

.sidebar-nav {
    padding: 24px 12px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 8px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    margin-bottom: 5px;
    transition: all 0.2s;
}

.nav-item i {
    font-size: 20px;
}

.nav-item:hover, .nav-item.active {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.nav-item.text-danger {
    color: var(--danger);
    margin-top: auto;
}

.nav-item.text-danger:hover {
    background-color: rgba(239, 68, 68, 0.1);
}

/* Main Content */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.top-header {
    height: 72px;
    padding: 0 32px;
    background-color: var(--sidebar-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.calendar-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.calendar-controls h2 {
    font-size: 20px;
    font-weight: 600;
    min-width: 180px;
    text-align: center;
    text-transform: capitalize;
}

/* Calendar Grid */
.calendar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding: 24px 32px;
    overflow: hidden;
}

.calendar-days-header {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    margin-bottom: 10px;
}

.calendar-days-header div {
    text-align: center;
    font-weight: 600;
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calendar-grid {
    flex: 1;
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 10px;
    min-height: 0;
}

.calendar-cell {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 8px;
    display: flex;
    flex-direction: column;
    transition: box-shadow 0.2s, border-color 0.2s;
    overflow: hidden;
}

.calendar-cell:hover {
    box-shadow: var(--shadow-md);
    border-color: #525252;
}

.calendar-cell.other-month {
    background-color: var(--day-other-month);
    opacity: 0.5;
}

.calendar-cell.today {
    border: 2px solid var(--primary);
}

.date-number {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 8px;
    align-self: flex-end;
}

.today .date-number {
    background: var(--primary);
    color: var(--primary-text);
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.events-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.events-container::-webkit-scrollbar {
    width: 4px;
}
.events-container::-webkit-scrollbar-track {
    background: transparent;
}
.events-container::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 4px;
}

.event-badge {
    font-size: 12px;
    padding: 4px 8px;
    border-radius: 4px;
    color: white; /* Keep white for readability over colors */
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: transform 0.1s, opacity 0.2s;
    border: 1px solid rgba(0,0,0,0.2);
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

.event-badge:hover {
    transform: scale(1.02);
    opacity: 0.9;
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease-out forwards;
}

.modal-content {
    background: var(--card-bg);
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    max-height: 90vh;
}

.modal-sm {
    max-width: 350px;
}

.modal-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 18px;
}

.close-modal {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s;
}

.close-modal:hover {
    color: var(--danger);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.modal-footer {
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-footer .btn-danger {
    margin-right: auto;
}

/* Color Picker */
.color-picker {
    display: flex;
    gap: 10px;
}

.color-picker input[type="radio"] {
    display: none;
}

.color-picker label {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-block;
    border: 2px solid transparent;
    transition: transform 0.2s;
    margin: 0;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.2);
}

.color-picker input[type="radio"]:checked + label {
    transform: scale(1.2);
    border-color: var(--text-main);
}

/* User Selection List in Event */
.user-select-list {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    max-height: 200px;
    overflow-y: auto;
    background: #1a1a1a;
}

.user-select-item {
    padding: 10px 15px;
    display: flex;
    align-items: center;
    gap: 10px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s;
}

.user-select-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
}

.user-select-item:last-child {
    border-bottom: none;
}

.user-select-item label {
    margin: 0;
    cursor: pointer;
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 400;
}

/* Tables */
.content-wrapper {
    padding: 32px;
    flex: 1;
    overflow-y: auto;
}

.table-container {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

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

.table th, .table td {
    padding: 16px 24px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    background: #1a1a1a;
    font-weight: 600;
    color: var(--text-muted);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* User detail card */
.user-detail-card {
    text-align: center;
}

.contact-info {
    text-align: left;
    background: #1a1a1a;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid var(--border-color);
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    font-size: 14px;
}

.contact-item:last-child {
    margin-bottom: 0;
}

.contact-item i {
    color: var(--text-muted);
    font-size: 18px;
}

.hidden {
    display: none !important;
}

/* Agenda View */
.agenda-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 20px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}
.agenda-item:hover {
    background: #1a1a1a;
    transform: translateY(-2px);
}
.agenda-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    gap: 15px;
}
.agenda-item-header h3 {
    margin: 0;
    font-size: 18px;
    color: var(--text-main);
    word-break: break-word;
}
.agenda-item-date {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    flex-wrap: wrap;
    justify-content: flex-end;
    text-align: right;
}
.agenda-duration {
    font-size: 11px;
    opacity: 0.7;
    background: rgba(255,255,255,0.1);
    padding: 2px 6px;
    border-radius: 4px;
    white-space: nowrap;
}
.agenda-item-users {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.agenda-user-badge {
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 12px;
    color: var(--text-main);
    display: inline-flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Mobile Responsiveness */
.mobile-day { display: none; }

@media (max-width: 768px) {
    .desktop-day { display: none; }
    .mobile-day { display: inline; }
    
    .app-container {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
        height: auto;
        order: 2; /* Přesun na spodek obrazovky jako spodní lišta */
        border-right: none;
        border-top: 1px solid var(--border-color);
        z-index: 100;
        background: var(--card-bg);
    }
    .sidebar-header, .user-profile-mini {
        display: none; /* Schovat loga a profil pro úsporu místa */
    }
    .sidebar .app-footer {
        display: none; /* Na mobilu patičku v menu schováme, aby navigace byla úplně dole */
    }
    .sidebar-nav {
        display: flex;
        justify-content: space-around;
        padding: 8px 5px;
        background: #050505;
    }
    .nav-item {
        flex-direction: column;
        gap: 4px;
        padding: 8px;
        font-size: 11px;
        margin-bottom: 0;
        text-align: center;
        flex: 1;
        justify-content: center;
        border-radius: 12px;
    }
    .nav-item i {
        font-size: 22px;
    }
    .nav-item.active {
        background: rgba(255,255,255,0.05);
    }
    .main-content {
        order: 1;
        height: calc(100vh - 65px); /* Odečteme výšku spodní navigace */
    }
    .top-header {
        padding: 15px;
        flex-direction: column;
        height: auto;
        gap: 15px;
    }
    .calendar-controls {
        width: 100%;
        justify-content: space-between;
    }
    .calendar-controls h2 {
        min-width: auto;
        font-size: 16px;
    }
    .header-actions {
        width: 100%;
        flex-direction: column;
        gap: 10px;
    }
    .header-actions .btn-group {
        width: 100%;
    }
    .header-actions .btn-primary {
        width: 100%;
    }
    .calendar-wrapper {
        padding: 10px;
    }
    .calendar-days-header div {
        font-size: 10px;
    }
    .calendar-grid {
        gap: 4px;
    }
    .calendar-cell {
        padding: 4px;
        min-height: 75px;
        border-radius: 6px;
    }
    .date-number {
        font-size: 12px;
        margin-bottom: 2px;
    }
    .today .date-number {
        width: 20px;
        height: 20px;
    }
    .event-badge {
        font-size: 10px;
        padding: 3px 4px;
        border-radius: 3px;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .events-container::-webkit-scrollbar {
        display: none;
    }
    .modal-content {
        margin: 10px;
        max-height: 90vh;
    }
    .agenda-wrapper {
        padding: 15px !important;
    }
    .content-wrapper {
        padding: 15px;
    }
    .agenda-item-header {
        flex-direction: column;
        gap: 8px;
    }
    .agenda-item-date {
        justify-content: flex-start;
        text-align: left;
        font-size: 13px;
    }
    .agenda-item {
        padding: 15px;
    }
    .table-container {
        overflow-x: auto;
    }
}

/* Footer */
.app-footer {
  margin-top: auto;
  padding: 1.5rem 1rem 1rem;
  text-align: center;
}

.app-footer a {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  transition: color 0.3s, transform 0.3s;
}

.app-footer a:hover {
  color: var(--text-main);
  transform: translateY(-1px);
}

.app-footer img {
  width: 100px;
  opacity: 0.55;
  transition: opacity 0.3s;
  filter: grayscale(1) brightness(200%);
}

.app-footer a:hover img {
  opacity: 1;
}