/**
 * TMS Frontend Styles - Modern Edition
 * 
 * Modernes, professionelles Design mit CSS Custom Properties
 * für vollständige Anpassbarkeit über den Theme Customizer.
 * 
 * WICHTIG: Alle Styles sind auf .tms-* Klassen beschränkt,
 * um Konflikte mit anderen Plugins zu vermeiden.
 *
 * @package TMS_Plugin
 * @since 1.3.0
 */

/* ==========================================================================
   CSS Custom Properties - Scoped to TMS elements only
   ========================================================================== */

.tms-form-container,
.tms-data-table-container,
.tms-wrap {
    /* Primärfarben */
    --tms-primary: #2563eb;
    --tms-primary-hover: #1d4ed8;
    --tms-primary-light: #dbeafe;
    --tms-primary-rgb: 37, 99, 235;
    
    /* Sekundärfarben */
    --tms-secondary: #64748b;
    --tms-secondary-hover: #475569;
    
    /* Status-Farben */
    --tms-success: #10b981;
    --tms-success-light: #d1fae5;
    --tms-warning: #f59e0b;
    --tms-warning-light: #fef3c7;
    --tms-error: #ef4444;
    --tms-error-light: #fee2e2;
    --tms-info: #3b82f6;
    --tms-info-light: #dbeafe;
    
    /* Neutrale Farben */
    --tms-white: #ffffff;
    --tms-gray-50: #f8fafc;
    --tms-gray-100: #f1f5f9;
    --tms-gray-200: #e2e8f0;
    --tms-gray-300: #cbd5e1;
    --tms-gray-400: #94a3b8;
    --tms-gray-500: #64748b;
    --tms-gray-600: #475569;
    --tms-gray-700: #334155;
    --tms-gray-800: #1e293b;
    --tms-gray-900: #0f172a;
    
    /* Typografie */
    --tms-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --tms-font-size-base: 16px;
    --tms-font-size-sm: 14px;
    --tms-font-size-lg: 18px;
    --tms-font-size-h1: 28px;
    --tms-font-size-h2: 22px;
    --tms-font-size-h3: 18px;
    --tms-line-height: 1.5;
    
    /* Abstände */
    --tms-spacing-xs: 4px;
    --tms-spacing-sm: 8px;
    --tms-spacing-md: 16px;
    --tms-spacing-lg: 24px;
    --tms-spacing-xl: 32px;
    --tms-spacing-2xl: 48px;
    
    /* Border Radius */
    --tms-radius-sm: 4px;
    --tms-radius: 6px;
    --tms-radius-md: 6px;
    --tms-radius-lg: 8px;
    --tms-radius-xl: 12px;
    --tms-radius-2xl: 16px;
    --tms-radius-full: 9999px;
    
    /* Schatten */
    --tms-shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --tms-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --tms-shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --tms-shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --tms-shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --tms-shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
    --tms-shadow-colored: 0 4px 14px 0 rgba(var(--tms-primary-rgb), 0.25);
    
    /* Übergänge */
    --tms-transition: all 0.2s ease-in-out;
    --tms-transition-fast: all 0.1s ease-in-out;
    --tms-transition-slow: all 0.3s ease-in-out;
    
    /* Container */
    --tms-container-max-width: 480px;
    --tms-container-padding: 24px;
    
    /* Buttons */
    --tms-button-padding-x: 24px;
    --tms-button-padding-y: 14px;
    
    /* Inputs */
    --tms-input-padding-x: 14px;
    --tms-input-padding-y: 12px;
    
    /* Cards */
    --tms-card-padding: 24px;
    
    /* Tabellen-spezifische Variablen */
    --tms-table-header-bg: #f8fafc;
    --tms-table-row-hover: #f1f5f9;
    --tms-table-font-size: 14px;
    --tms-table-header-font-size: 13px;
    --tms-table-cell-padding-x: 14px;
    --tms-table-cell-padding-y: 10px;
}

/* ==========================================================================
   Form Container - Modern Design
   ========================================================================== */

.tms-form-container {
    max-width: var(--tms-container-max-width);
    margin: 0 auto;
    padding: var(--tms-container-padding);
    background: var(--tms-white);
    border: 1px solid var(--tms-gray-200);
    border-radius: var(--tms-radius-xl);
    box-shadow: var(--tms-shadow-lg);
    font-family: var(--tms-font-family);
    position: relative;
    overflow: hidden;
}

/* Dezenter Gradient-Akzent am oberen Rand */
.tms-form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--tms-primary), var(--tms-primary-hover));
    border-radius: var(--tms-radius-xl) var(--tms-radius-xl) 0 0;
}

.tms-form-title {
    font-size: var(--tms-font-size-h2);
    font-weight: 700;
    color: var(--tms-gray-800);
    margin: 0 0 var(--tms-spacing-lg) 0;
    padding-bottom: var(--tms-spacing-md);
    border-bottom: 1px solid var(--tms-gray-100);
    text-align: center;
    letter-spacing: -0.025em;
}

/* ==========================================================================
   Form Elements - Enhanced
   ========================================================================== */

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

.tms-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--tms-spacing-sm);
}

.tms-label {
    font-size: var(--tms-font-size-sm);
    font-weight: 600;
    color: var(--tms-gray-700);
    display: flex;
    align-items: center;
    gap: var(--tms-spacing-xs);
}

.tms-required {
    color: var(--tms-error);
    font-weight: 700;
}

/* Modern Input & Select Styles */
.tms-input,
.tms-select,
.tms-textarea {
    width: 100%;
    padding: var(--tms-input-padding-y) var(--tms-input-padding-x);
    font-size: var(--tms-font-size-base);
    font-family: inherit;
    color: var(--tms-gray-800);
    background: var(--tms-white);
    border: 2px solid var(--tms-gray-200);
    border-radius: var(--tms-radius-lg);
    transition: var(--tms-transition);
    box-sizing: border-box;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
}

.tms-input::placeholder,
.tms-textarea::placeholder {
    color: var(--tms-gray-400);
}

.tms-input:hover,
.tms-select:hover,
.tms-textarea:hover {
    border-color: var(--tms-gray-300);
}

.tms-input:focus,
.tms-select:focus,
.tms-textarea:focus {
    outline: none;
    border-color: var(--tms-primary);
    box-shadow: 0 0 0 4px var(--tms-primary-light);
}

.tms-input:disabled,
.tms-select:disabled {
    background: var(--tms-gray-50);
    border-color: var(--tms-gray-200);
    color: var(--tms-gray-500);
    cursor: not-allowed;
}

/* Enhanced Select Arrow */
.tms-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b' stroke-width='2'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 20px;
    padding-right: 48px;
    cursor: pointer;
}

/* Textarea */
.tms-textarea {
    resize: vertical;
    min-height: 100px;
    line-height: var(--tms-line-height);
}

/* Readonly Input (Datepicker) */
.tms-input[readonly] {
    cursor: pointer;
    background: var(--tms-white);
}

/* Decimal Input */
.tms-decimal-input {
    text-align: right;
    font-family: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", monospace;
    font-weight: 500;
    letter-spacing: 0.025em;
}

/* Field Hint */
.tms-field-hint {
    display: flex;
    align-items: center;
    gap: var(--tms-spacing-xs);
    font-size: 12px;
    color: var(--tms-gray-500);
    margin-top: var(--tms-spacing-xs);
}

.tms-field-hint svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ==========================================================================
   Datepicker (Flatpickr) Customization - Only for TMS
   ========================================================================== */

.tms-form-container .flatpickr-calendar,
.tms-data-table-container .flatpickr-calendar {
    font-family: var(--tms-font-family) !important;
    border: 1px solid var(--tms-gray-200) !important;
    border-radius: var(--tms-radius-xl) !important;
    box-shadow: var(--tms-shadow-xl) !important;
    overflow: hidden;
}

.tms-form-container .flatpickr-months,
.tms-data-table-container .flatpickr-months {
    background: var(--tms-gray-50);
    border-bottom: 1px solid var(--tms-gray-200);
    padding: 8px 0;
}

.tms-form-container .flatpickr-day.selected,
.tms-form-container .flatpickr-day.selected:hover,
.tms-data-table-container .flatpickr-day.selected,
.tms-data-table-container .flatpickr-day.selected:hover {
    background: var(--tms-primary) !important;
    border-color: var(--tms-primary) !important;
    font-weight: 600;
}

.tms-form-container .flatpickr-day:hover,
.tms-data-table-container .flatpickr-day:hover {
    background: var(--tms-primary-light) !important;
    border-color: var(--tms-primary-light) !important;
}

.tms-form-container .flatpickr-day.today,
.tms-data-table-container .flatpickr-day.today {
    border-color: var(--tms-primary) !important;
    font-weight: 600;
}

/* ==========================================================================
   Modern Buttons
   ========================================================================== */

.tms-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--tms-spacing-sm);
    width: 100%;
    padding: var(--tms-button-padding-y) var(--tms-button-padding-x);
    font-size: var(--tms-font-size-base);
    font-weight: 600;
    font-family: inherit;
    text-decoration: none;
    border: none;
    border-radius: var(--tms-radius-lg);
    cursor: pointer;
    transition: var(--tms-transition);
    position: relative;
    overflow: hidden;
}

.tms-button-primary {
    background: linear-gradient(135deg, var(--tms-primary), var(--tms-primary-hover));
    color: var(--tms-white);
    box-shadow: var(--tms-shadow-colored);
}

.tms-button-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(var(--tms-primary-rgb), 0.35);
}

.tms-button-primary:active {
    transform: translateY(0);
}

.tms-button-primary:disabled {
    background: var(--tms-gray-300);
    box-shadow: none;
    cursor: not-allowed;
    transform: none;
}

.tms-button-secondary {
    background: var(--tms-white);
    color: var(--tms-gray-700);
    border: 2px solid var(--tms-gray-200);
}

.tms-button-secondary:hover {
    background: var(--tms-gray-50);
    border-color: var(--tms-gray-300);
}

/* Loading State */
.tms-btn-loading {
    display: flex;
    align-items: center;
    gap: var(--tms-spacing-sm);
}

/* Modern Spinner */
.tms-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--tms-white);
    border-radius: 50%;
    animation: tms-spin 0.8s linear infinite;
}

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

/* ==========================================================================
   Messages & Notices - Enhanced
   ========================================================================== */

.tms-form-message {
    display: flex;
    align-items: center;
    gap: var(--tms-spacing-sm);
    padding: var(--tms-spacing-md);
    border-radius: var(--tms-radius-lg);
    font-size: var(--tms-font-size-sm);
    font-weight: 500;
    margin-top: var(--tms-spacing-sm);
}

.tms-form-message svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.tms-form-message.tms-success {
    background: var(--tms-success-light);
    color: #065f46;
    border: 1px solid var(--tms-success);
}

.tms-form-message.tms-error {
    background: var(--tms-error-light);
    color: #991b1b;
    border: 1px solid var(--tms-error);
}

.tms-form-message.tms-warning {
    background: var(--tms-warning-light);
    color: #92400e;
    border: 1px solid var(--tms-warning);
}

.tms-form-message.tms-info {
    background: var(--tms-info-light);
    color: #1e40af;
    border: 1px solid var(--tms-info);
}

.tms-form-notice {
    max-width: var(--tms-container-max-width);
    margin: 0 auto;
    padding: var(--tms-spacing-lg);
    border-radius: var(--tms-radius-xl);
    text-align: center;
}

.tms-notice-error {
    background: var(--tms-error-light);
    color: #991b1b;
    border: 1px solid var(--tms-error);
}

/* ==========================================================================
   Validation States
   ========================================================================== */

.tms-input.tms-invalid,
.tms-select.tms-invalid {
    border-color: var(--tms-error);
    box-shadow: 0 0 0 4px var(--tms-error-light);
}

.tms-input.tms-valid,
.tms-select.tms-valid {
    border-color: var(--tms-success);
}

.tms-field-error {
    display: flex;
    align-items: center;
    gap: var(--tms-spacing-xs);
    font-size: 13px;
    color: var(--tms-error);
    margin-top: var(--tms-spacing-xs);
    font-weight: 500;
}

/* ==========================================================================
   Form Actions
   ========================================================================== */

.tms-form-actions {
    margin-top: var(--tms-spacing-sm);
    padding-top: var(--tms-spacing-lg);
    border-top: 1px solid var(--tms-gray-100);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet */
@media screen and (max-width: 768px) {
    .tms-form-container {
        max-width: 100%;
        margin: 0 var(--tms-spacing-md);
        padding: var(--tms-spacing-lg);
        border-radius: var(--tms-radius-lg);
    }
    
    .tms-form-title {
        font-size: calc(var(--tms-font-size-h2) - 2px);
    }
}

/* Mobile */
@media screen and (max-width: 480px) {
    .tms-form-container {
        margin: 0;
        border-radius: 0;
        border-left: none;
        border-right: none;
        padding: var(--tms-spacing-md);
    }
    
    .tms-form-container::before {
        border-radius: 0;
    }
    
    .tms-form {
        gap: var(--tms-spacing-md);
    }
    
    .tms-input,
    .tms-select,
    .tms-textarea {
        padding: var(--tms-spacing-md) var(--tms-spacing-sm);
        font-size: 16px; /* Verhindert Zoom auf iOS */
    }
    
    .tms-button {
        padding: var(--tms-spacing-md) var(--tms-spacing-lg);
        font-size: var(--tms-font-size-base);
    }
}

/* Touch Device Optimizations */
@media (hover: none) and (pointer: coarse) {
    .tms-input,
    .tms-select,
    .tms-textarea {
        min-height: 52px;
    }
    
    .tms-button {
        min-height: 56px;
    }
    
    .tms-select {
        background-size: 24px;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .tms-form-container {
        box-shadow: none;
        border: 1px solid #ccc;
    }
    
    .tms-form-container::before {
        display: none;
    }
    
    .tms-form-actions {
        display: none;
    }
    
    .tms-button {
        display: none;
    }
}

/* ==========================================================================
   Accessibility - Scoped to TMS elements
   ========================================================================== */

/* Fokus für Tastaturnavigation */
.tms-form-container .tms-input:focus-visible,
.tms-form-container .tms-select:focus-visible,
.tms-form-container .tms-textarea:focus-visible,
.tms-form-container .tms-button:focus-visible,
.tms-data-table-container .tms-input:focus-visible,
.tms-data-table-container .tms-select:focus-visible,
.tms-data-table-container .tms-button:focus-visible {
    outline: 2px solid var(--tms-primary);
    outline-offset: 2px;
}

/* Reduzierte Bewegung - nur für TMS Elemente */
@media (prefers-reduced-motion: reduce) {
    .tms-form-container *,
    .tms-form-container *::before,
    .tms-form-container *::after,
    .tms-data-table-container *,
    .tms-data-table-container *::before,
    .tms-data-table-container *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}