/**
 * Abrechnungsbogen - Styles v2
 * 
 * Mobile-First für Digital Natives (Musik-Studenten)
 * Kompakt, modern, schnell erfassbar
 * 
 * @package    LMN_Muenchen
 * @subpackage Abrechnungsbogen
 * @since      2025-12-17
 */

/* ==========================================================================
   Variables
   ========================================================================== */

:root {
    --lmn-primary: #D92229;
    --lmn-primary-dark: #b81c22;
    --lmn-success: #10b981;
    --lmn-error: #ef4444;
    --lmn-gray-50: #f9fafb;
    --lmn-gray-100: #f3f4f6;
    --lmn-gray-200: #e5e7eb;
    --lmn-gray-400: #9ca3af;
    --lmn-gray-600: #4b5563;
    --lmn-gray-900: #111827;
    --lmn-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --lmn-radius: 12px;
    --lmn-radius-sm: 8px;
}

/* ==========================================================================
   Base
   ========================================================================== */

.lmn-abrechnung {
    font-family: var(--lmn-font);
    max-width: 480px;
    margin: 0 auto;
    padding: 16px;
    background: #fff;
    color: var(--lmn-gray-900);
    font-size: 15px;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Header mit Logo
   ========================================================================== */

.lmn-abrechnung-header {
    text-align: center;
    padding: 12px 0 16px;
    margin-bottom: 12px;
}

.lmn-abrechnung-logo-img {
    height: 48px;
    width: auto;
    margin-bottom: 8px;
}

.lmn-abrechnung-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0;
    color: var(--lmn-gray-900);
}

/* ==========================================================================
   Kompakte Info-Bar
   ========================================================================== */

.lmn-abrechnung-info-bar {
    background: var(--lmn-gray-50);
    border: 1px solid var(--lmn-gray-200);
    border-radius: var(--lmn-radius);
    padding: 12px;
    margin-bottom: 16px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px 16px;
}

.lmn-info-item {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    font-size: 13px;
}

.lmn-info-label {
    flex-shrink: 0;
    font-size: 14px;
}

.lmn-info-value {
    color: var(--lmn-gray-600);
    overflow: hidden;
    text-overflow: ellipsis;
}

.lmn-info-honorar {
    grid-column: 1 / -1;
    padding-top: 8px;
    border-top: 1px solid var(--lmn-gray-200);
    margin-top: 4px;
}

.lmn-info-honorar .lmn-info-value {
    font-weight: 600;
    color: var(--lmn-primary);
}

/* ==========================================================================
   Sections
   ========================================================================== */

.lmn-abrechnung-section {
    margin-bottom: 16px;
}

.lmn-abrechnung-section-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--lmn-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin: 0 0 8px;
}

/* Primary Section: "Wer bist du?" */
.lmn-abrechnung-section-primary {
    background: var(--lmn-gray-50);
    border: 2px solid var(--lmn-primary);
    border-radius: var(--lmn-radius);
    padding: 16px;
}

.lmn-abrechnung-section-primary .lmn-abrechnung-section-title {
    color: var(--lmn-primary);
    font-size: 15px;
    margin-bottom: 12px;
}

/* ==========================================================================
   Select Dropdown
   ========================================================================== */

.lmn-abrechnung-select {
    width: 100%;
    padding: 14px 40px 14px 14px;
    font-size: 16px;
    font-family: inherit;
    font-weight: 500;
    border: 2px solid var(--lmn-gray-200);
    border-radius: var(--lmn-radius-sm);
    background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%234b5563' d='M6 8L1 3h10z'/%3E%3C/svg%3E") no-repeat right 14px center;
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    transition: border-color 0.15s;
}

.lmn-abrechnung-select:focus {
    outline: none;
    border-color: var(--lmn-primary);
}

.lmn-abrechnung-select option:disabled {
    color: var(--lmn-gray-400);
}

/* ==========================================================================
   User Info (kompakt)
   ========================================================================== */

.lmn-abrechnung-user-info {
    font-size: 13px;
    color: var(--lmn-gray-600);
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--lmn-gray-200);
}

/* ==========================================================================
   Input Fields
   ========================================================================== */

.lmn-abrechnung-field {
    margin-bottom: 12px;
}

.lmn-abrechnung-field:last-child {
    margin-bottom: 0;
}

.lmn-abrechnung-field label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--lmn-gray-600);
    margin-bottom: 6px;
}

.lmn-abrechnung-input {
    width: 100%;
    padding: 12px 14px;
    font-size: 16px;
    font-family: inherit;
    border: 2px solid var(--lmn-gray-200);
    border-radius: var(--lmn-radius-sm);
    background: #fff;
    -webkit-appearance: none;
    transition: border-color 0.15s;
}

.lmn-abrechnung-input:focus {
    outline: none;
    border-color: var(--lmn-primary);
}

.lmn-abrechnung-input.is-valid {
    border-color: var(--lmn-success);
}

.lmn-abrechnung-input.is-invalid {
    border-color: var(--lmn-error);
}

/* ==========================================================================
   IBAN Display
   ========================================================================== */

.lmn-abrechnung-iban-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 14px;
    background: var(--lmn-gray-50);
    border: 2px solid var(--lmn-gray-200);
    border-radius: var(--lmn-radius-sm);
}

.lmn-abrechnung-iban-value {
    font-family: "SF Mono", Monaco, monospace;
    font-size: 13px;
    letter-spacing: 0.5px;
}

.lmn-abrechnung-iban-edit {
    background: none;
    border: none;
    color: var(--lmn-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    margin: -4px -8px -4px 0;
}

.lmn-abrechnung-iban-feedback {
    font-size: 12px;
    margin-top: 6px;
}

.lmn-abrechnung-iban-feedback.valid {
    color: var(--lmn-success);
}

.lmn-abrechnung-iban-feedback.invalid {
    color: var(--lmn-error);
}

/* ==========================================================================
   Signature
   ========================================================================== */

.lmn-abrechnung-signature-wrapper {
    position: relative;
    background: #fff;
    border: 2px solid var(--lmn-gray-200);
    border-radius: var(--lmn-radius-sm);
    overflow: hidden;
}

.lmn-abrechnung-signature-canvas {
    width: 100%;
    height: 120px;
    display: block;
    touch-action: none;
}

.lmn-abrechnung-signature-clear {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--lmn-gray-100);
    border: none;
    border-radius: 4px;
    padding: 4px 8px;
    font-size: 12px;
    color: var(--lmn-gray-600);
    cursor: pointer;
}

.lmn-abrechnung-signature-clear:hover {
    background: var(--lmn-gray-200);
}

/* ==========================================================================
   Submit Button
   ========================================================================== */

.lmn-abrechnung-btn-submit {
    width: 100%;
    padding: 16px 24px;
    font-size: 16px;
    font-weight: 600;
    font-family: inherit;
    background: var(--lmn-primary);
    color: #fff;
    border: none;
    border-radius: var(--lmn-radius);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    -webkit-appearance: none;
}

.lmn-abrechnung-btn-submit:hover {
    background: var(--lmn-primary-dark);
}

.lmn-abrechnung-btn-submit:active {
    transform: scale(0.98);
}

.lmn-abrechnung-btn-submit:disabled {
    background: var(--lmn-gray-400);
    cursor: not-allowed;
    transform: none;
}

.lmn-abrechnung-btn-submit .btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.lmn-abrechnung-btn-submit .btn-loading::before {
    content: "";
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==========================================================================
   Feedback
   ========================================================================== */

.lmn-abrechnung-feedback {
    padding: 12px 14px;
    border-radius: var(--lmn-radius-sm);
    margin-top: 12px;
    font-size: 14px;
}

.lmn-abrechnung-feedback.success {
    background: #d1fae5;
    color: #065f46;
}

.lmn-abrechnung-feedback.error {
    background: #fee2e2;
    color: #991b1b;
}

/* ==========================================================================
   Success State
   ========================================================================== */

.lmn-abrechnung-success {
    text-align: center;
    padding: 48px 20px;
}

.lmn-success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--lmn-success);
    color: #fff;
    border-radius: 50%;
    font-size: 32px;
    line-height: 64px;
}

.lmn-abrechnung-success h2 {
    font-size: 22px;
    margin: 0 0 8px;
}

.lmn-abrechnung-success p {
    font-size: 14px;
    color: var(--lmn-gray-600);
    margin: 0;
}

/* ==========================================================================
   Error State
   ========================================================================== */

.lmn-abrechnung-error {
    text-align: center;
    padding: 48px 20px;
}

.lmn-abrechnung-error .lmn-abrechnung-card {
    max-width: 320px;
    margin: 0 auto;
}

.lmn-abrechnung-icon {
    font-size: 48px;
    margin-bottom: 12px;
}

.lmn-abrechnung-error h2 {
    font-size: 18px;
    color: var(--lmn-error);
    margin: 0 0 8px;
}

.lmn-abrechnung-error p {
    font-size: 14px;
    color: var(--lmn-gray-600);
    margin: 0;
}

.lmn-abrechnung-contact {
    margin-top: 20px;
    font-size: 13px;
}

.lmn-abrechnung-contact a {
    color: var(--lmn-primary);
}

/* ==========================================================================
   Collapsible Info-Banner
   ========================================================================== */

.lmn-info-banner {
    background: #f0f7ff;
    border-left: 4px solid #0066cc;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.lmn-info-banner.collapsed {
    background: transparent;
    border-left-color: #ccc;
}

.lmn-info-banner-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    cursor: pointer;
    user-select: none;
}

.lmn-info-banner.collapsed .lmn-info-banner-header {
    padding: 0.5rem 1rem;
}

.lmn-info-banner-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex: 1;
    font-size: 14px;
    font-weight: 500;
    color: #333;
}

.lmn-info-icon {
    font-size: 16px;
}

.lmn-info-banner-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.lmn-info-toggle,
.lmn-info-close {
    background: none;
    border: none;
    padding: 0.25rem 0.5rem;
    cursor: pointer;
    color: #666;
    font-size: 18px;
    line-height: 1;
    transition: color 0.2s ease;
}

.lmn-info-toggle:hover,
.lmn-info-close:hover {
    color: #0066cc;
}

.lmn-toggle-icon {
    display: inline-block;
    transition: transform 0.3s ease;
}

.lmn-info-banner.expanded .lmn-toggle-icon {
    transform: rotate(180deg);
}

.lmn-info-banner-content {
    padding: 0 1rem 1rem 1rem;
    max-height: 500px;
    opacity: 1;
    transition: max-height 0.3s ease, opacity 0.3s ease, padding 0.3s ease;
}

.lmn-info-banner.collapsed .lmn-info-banner-content {
    max-height: 0;
    opacity: 0;
    padding: 0 1rem;
    overflow: hidden;
}

.lmn-info-banner-content p {
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 0.75rem;
    color: #333;
}

.lmn-info-list {
    margin: 0.5rem 0 0.75rem 0;
    padding-left: 1rem;
    font-size: 14px;
}

.lmn-info-list li {
    margin-bottom: 0.25rem;
}

.lmn-info-note {
    font-size: 13px;
    color: #666;
    margin: 0.75rem 0 0;
}

/* ==========================================================================
   Info-Box & UX-Verbesserungen (ALT - kann entfernt werden)
   ========================================================================== */

/* Submit-Button mit Subtext */
.btn-subtext {
    display: block;
    font-size: 0.85rem;
    font-weight: normal;
    opacity: 0.8;
    margin-top: 0.25rem;
}

/* Erweiterter Success-State */
.lmn-success-details {
    text-align: left;
    max-width: 500px;
    margin: 2rem auto;
}

.lmn-success-details p {
    margin: 1rem 0;
}

.lmn-success-list {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.lmn-success-list li {
    margin-bottom: 0.5rem;
}

.lmn-success-note {
    margin-top: 2rem;
    font-size: 0.9rem;
    color: #666;
}

.lmn-success-note a {
    color: var(--lmn-primary);
    text-decoration: none;
}

.lmn-success-note a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Desktop adjustments (optional)
   ========================================================================== */

@media (min-width: 480px) {
    .lmn-abrechnung {
        padding: 24px;
    }
    
    .lmn-abrechnung-logo-img {
        height: 56px;
    }
    
    .lmn-abrechnung-title {
        font-size: 24px;
    }
    
    .lmn-abrechnung-signature-canvas {
        height: 140px;
    }
    
    /* Info-Banner größere Schrift auf Desktop */
    .lmn-info-banner-title {
        font-size: 15px;
    }
    
    .lmn-info-banner-content p,
    .lmn-info-list {
        font-size: 15px;
    }
}

/* Mobile Touch-Optimierung für Info-Banner */
@media (max-width: 479px) {
    .lmn-info-toggle,
    .lmn-info-close {
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    /* Banner etwas kompakter auf Mobile */
    .lmn-info-banner-header {
        padding: 0.625rem 0.75rem;
    }
    
    .lmn-info-banner.collapsed .lmn-info-banner-header {
        padding: 0.5rem 0.75rem;
    }
}