/**
 * Hlavní stylesheet pro aplikaci DOD
 * Apple-like minimalistický design
 */

:root {
    /* Barvy */
    --color-primary: #007AFF;
    --color-primary-dark: #0051D5;
    --color-success: #34C759;
    --color-danger: #FF3B30;
    --color-warning: #FF9500;
    --color-info: #5AC8FA;
    
    /* Neutrální barvy */
    --color-bg: #F5F5F7;
    --color-bg-light: #FFFFFF;
    --color-text: #1D1D1F;
    --color-text-secondary: #86868B;
    --color-border: #D2D2D7;
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.18);
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    
    /* Typografie */
    --font-family: 'Roboto Slab', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --font-size-h1: 2.5rem;
    --font-size-h2: 2rem;
    --font-size-h3: 1.5rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Border radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
    padding-bottom: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-lg);
}

/* ===== LOGIN PAGE ===== */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: var(--spacing-lg);
}

.login-container {
    width: 100%;
    max-width: 420px;
}

.login-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xxl);
    box-shadow: var(--glass-shadow);
    animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.login-header h1 {
    font-size: var(--font-size-h2);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.login-header .subtitle {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* ===== FORM ELEMENTS ===== */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group label {
    font-weight: 500;
    color: var(--color-text);
    font-size: var(--font-size-small);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="date"],
textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background: var(--color-bg-light);
    transition: all var(--transition-base);
    -webkit-appearance: none;
    appearance: none;
}

input:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

input::placeholder {
    color: var(--color-text-secondary);
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-large {
    padding: var(--spacing-lg) var(--spacing-xl);
    font-size: var(--font-size-large);
    min-height: 56px; /* Touch target */
}

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

.btn-danger:hover:not(:disabled) {
    background: #D32F2F;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover:not(:disabled) {
    background: #28A745;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--color-bg-light);
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

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

.btn-link {
    background: transparent;
    color: var(--color-primary);
    padding: var(--spacing-sm);
}

.btn-link:hover {
    text-decoration: underline;
}

/* ===== ALERTS ===== */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    animation: slideIn 0.3s ease;
}

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

.alert-success {
    background: #E8F5E9;
    color: #2E7D32;
    border-left: 4px solid var(--color-success);
}

.alert-error {
    background: #FFEBEE;
    color: #C62828;
    border-left: 4px solid var(--color-danger);
}

.alert-warning {
    background: #FFF3E0;
    color: #E65100;
    border-left: 4px solid var(--color-warning);
}

/* ===== HEADER ===== */
.app-header {
    background: var(--color-bg-light);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-sm);
}

.app-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.app-header h1 {
    font-size: var(--font-size-h3);
    font-weight: 700;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.user-info {
    color: var(--color-text-secondary);
    font-size: var(--font-size-small);
}

/* ===== FORM PAGE ===== */
.form-page {
    padding-bottom: var(--spacing-xxl);
}

.dod-form {
    background: var(--color-bg-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    margin-bottom: var(--spacing-xl);
}

.form-section {
    margin-bottom: var(--spacing-xl);
}

.section-label {
    display: block;
    font-weight: 600;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.required {
    color: var(--color-danger);
}

/* ===== CHECKBOXES ===== */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    transition: background var(--transition-base);
    -webkit-tap-highlight-color: transparent;
    min-height: 56px; /* Touch target */
}

.checkbox-label:hover {
    background: var(--color-bg);
}

.checkbox-input {
    display: none;
}

.checkbox-custom {
    width: 24px;
    height: 24px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.checkbox-input:checked + .checkbox-custom {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checkbox-input:checked + .checkbox-custom::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 16px;
    font-weight: bold;
}

.checkbox-text {
    font-size: var(--font-size-base);
    user-select: none;
}

/* ===== RADIO BUTTONS ===== */
.radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.radio-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    -webkit-tap-highlight-color: transparent;
    min-height: 56px; /* Touch target */
    flex: 1;
    min-width: 120px;
    justify-content: center;
}

.radio-label:hover {
    border-color: var(--color-primary);
    background: rgba(0, 122, 255, 0.05);
}

.radio-input {
    display: none;
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-radius: 50%;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-base);
}

.radio-input:checked + .radio-custom {
    border-color: var(--color-primary);
}

.radio-input:checked + .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background: var(--color-primary);
    border-radius: 50%;
}

.radio-text {
    font-size: var(--font-size-base);
    user-select: none;
}

/* ===== AUTOCOMPLETE ===== */
.autocomplete-wrapper {
    position: relative;
}

.autocomplete-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background: var(--color-bg-light);
}

.autocomplete-list {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-light);
    border: 2px solid var(--color-border);
    border-top: none;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    box-shadow: var(--shadow-lg);
}

.autocomplete-list.active {
    display: block;
}

.autocomplete-item {
    padding: var(--spacing-md);
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--color-border);
    min-height: 48px;
    display: flex;
    align-items: center;
}

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

.autocomplete-item:hover,
.autocomplete-item.selected {
    background: rgba(0, 122, 255, 0.15);
    color: var(--color-primary);
    font-weight: 500;
}

.autocomplete-item:active {
    background: rgba(0, 122, 255, 0.25);
    transform: scale(0.98);
}

/* ===== TEXT INPUTS ===== */
.text-input,
.date-input {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    background: var(--color-bg-light);
    min-height: 56px; /* Touch target */
}

/* ===== FORM ACTIONS ===== */
.form-actions {
    margin-top: var(--spacing-xxl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.close-day-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-xl);
    background: #FFF3E0;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-warning);
    width: 100%;
    box-sizing: border-box;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.close-day-section form {
    margin: 0;
    padding: 0;
}

.close-day-section .close-day-button {
    margin: 0;
}

.links-section {
    margin-top: var(--spacing-xl);
    text-align: center;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    :root {
        --font-size-h1: 2rem;
        --font-size-h2: 1.75rem;
        --font-size-h3: 1.25rem;
    }
    
    .container {
        padding: var(--spacing-md);
    }
    
    .dod-form {
        padding: var(--spacing-lg);
    }
    
    .app-header .container {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .radio-group {
        flex-direction: column;
    }
    
    .radio-label {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: var(--spacing-xl);
    }
    
    .btn-large {
        width: 100%;
    }
}

/* ===== COPYRIGHT FOOTER ===== */
.copyright-footer {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    width: 100%;
    margin: 0;
    padding: 4px 8px;
    background: var(--color-bg);
    border-top: 1px solid var(--color-border);
    text-align: center;
    font-size: 6px;
    color: var(--color-text-secondary);
    z-index: 1000;
    line-height: 1.2;
}

.copyright-content {
    max-width: 100%;
    margin: 0 auto;
    white-space: nowrap;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.copyright-content strong {
    color: var(--color-text);
    font-weight: 600;
}

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

.copyright-content a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}


/* ===== PRINT STYLES ===== */
@media print {
    body {
        background: white;
    }
    
    .app-header,
    .form-actions,
    .close-day-section,
    .links-section {
        display: none;
    }
    
    .dod-form {
        box-shadow: none;
        border: none;
    }
    
    .copyright-footer {
        border-top: 1px solid #ccc;
        padding: 2px 4px;
        font-size: 6px;
        position: relative;
    }
}