/* Terminbuchungs-App Stylesheet */

:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --success: #16a34a;
    --success-light: #dcfce7;
    --error: #dc2626;
    --error-light: #fee2e2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--gray-800);
    background: var(--gray-50);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* Header Banner */
.header-banner {
    width: 100%;
    max-height: 280px;
    overflow: hidden;
    background: var(--gray-200);
}

.header-banner img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    display: block;
}

.container.has-banner {
    padding-top: 0;
}

/* Header */
.app-header {
    text-align: center;
    margin-bottom: 40px;
    padding-top: 24px;
}

.has-banner .app-header {
    margin-top: -48px;
    position: relative;
    z-index: 1;
}

.profile-section {
    margin-bottom: 16px;
}

.profile-avatar {
    width: 96px;
    height: 96px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: var(--shadow-lg);
    background: white;
}

.has-banner .profile-avatar {
    width: 104px;
    height: 104px;
}

.app-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 4px;
}

.organizer-name {
    color: var(--primary);
    font-size: 15px;
    font-weight: 500;
    margin-bottom: 8px;
}

.welcome-text {
    color: var(--gray-900);
    font-size: 15px;
    max-width: 80%;
    margin: 0 auto;
    text-align: left;
    line-height: 1.5;
}

.booking-info-text {
    color: var(--gray-900);
    font-size: 14px;
    max-width: 80%;
    margin: 0 auto 20px;
    text-align: left;
    line-height: 1.5;
}

/* Booking Steps */
.booking-steps {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
}

.step {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-400);
    background: var(--gray-100);
    transition: all 0.3s ease;
}

.step.active {
    color: var(--primary);
    background: var(--primary-light);
}

.step.completed {
    color: var(--success);
    background: var(--success-light);
}

.step-number {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 700;
    background: var(--gray-300);
    color: white;
}

.step.active .step-number {
    background: var(--primary);
}

.step.completed .step-number {
    background: var(--success);
}

.step-connector {
    width: 40px;
    height: 2px;
    background: var(--gray-200);
}

/* Panels */
.booking-panel {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 32px;
    display: none;
}

.booking-panel.active {
    display: block;
}

.panel-title {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--gray-800);
}

/* Calendar & Time Layout */
.calendar-time-wrapper {
    text-align: center;
}

.calendar-container {
    display: inline-block;
    width: 420px;
    text-align: left;
    vertical-align: top;
}

.calendar-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.calendar-nav button {
    background: none;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 8px 12px;
    cursor: pointer;
    color: var(--gray-600);
    font-size: 16px;
    transition: all 0.2s;
}

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

.calendar-nav button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.calendar-month-year {
    font-size: 18px;
    font-weight: 600;
    color: var(--gray-800);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-weekday {
    text-align: center;
    font-size: 12px;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 8px 0;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    border-radius: var(--radius);
    cursor: default;
    color: var(--gray-300);
    position: relative;
    transition: all 0.2s;
}

.calendar-day.available {
    color: var(--gray-800);
    cursor: pointer;
    font-weight: 500;
}

.calendar-day.available:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.calendar-day.selected {
    background: var(--primary);
    color: white;
    font-weight: 600;
}

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

.calendar-day.other-month {
    visibility: hidden;
}

.calendar-day .slot-count {
    position: absolute;
    bottom: 2px;
    right: 2px;
    font-size: 9px;
    color: var(--success);
    font-weight: 600;
}

.calendar-loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-400);
}

/* Time Slots */
.time-slots-container {
    display: inline-block;
    width: 200px;
    text-align: left;
    vertical-align: top;
    margin-left: 24px;
}

.time-slots-container.hidden {
    display: none !important;
}

.time-slots-date {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-700);
    margin-bottom: 12px;
}

.time-slots-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
}

.time-slot {
    padding: 10px;
    text-align: center;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    transition: all 0.2s;
}

.time-slot:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-light);
}

.time-slot.selected {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.time-slots-empty {
    text-align: center;
    padding: 20px;
    color: var(--gray-400);
    font-size: 14px;
}

/* Form */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 6px;
}

.form-group label .required {
    color: var(--error);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
    color: var(--gray-800);
    transition: border-color 0.2s;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

.form-group input.error,
.form-group textarea.error {
    border-color: var(--error);
}

.form-error {
    font-size: 12px;
    color: var(--error);
    margin-top: 4px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

/* Attendees */
.attendees-section {
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 16px;
    margin-bottom: 20px;
}

.attendees-section h3 {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray-700);
}

.attendee-row {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.attendee-row input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    font-size: 14px;
}

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

.btn-remove-attendee {
    background: none;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 8px 12px;
    cursor: pointer;
    color: var(--error);
    font-size: 16px;
    transition: all 0.2s;
}

.btn-remove-attendee:hover {
    background: var(--error-light);
    border-color: var(--error);
}

.btn-add-attendee {
    background: none;
    border: 1px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 8px 16px;
    cursor: pointer;
    color: var(--gray-500);
    font-size: 13px;
    width: 100%;
    transition: all 0.2s;
}

.btn-add-attendee:hover {
    border-color: var(--primary);
    color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-family: inherit;
}

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

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

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

.btn-secondary {
    background: white;
    color: var(--gray-600);
    border: 1px solid var(--gray-200);
}

.btn-secondary:hover {
    background: var(--gray-50);
}

.btn-group {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
}

/* Summary */
.booking-summary {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 20px;
    margin-bottom: 24px;
}

.booking-summary h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--gray-800);
}

.summary-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 14px;
}

.summary-label {
    color: var(--gray-500);
}

.summary-value {
    font-weight: 500;
    color: var(--gray-800);
}

/* Success */
.success-panel {
    text-align: center;
    padding: 40px 20px;
}

.success-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--success-light);
    color: var(--success);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.success-panel h2 {
    font-size: 24px;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.success-panel p {
    color: var(--gray-500);
    margin-bottom: 20px;
}

.success-details {
    background: var(--gray-50);
    border-radius: var(--radius);
    padding: 20px;
    margin: 20px auto;
    max-width: 400px;
    text-align: left;
}

.teams-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: #6264a7;
    text-decoration: none;
    font-weight: 500;
    margin-top: 12px;
}

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

/* Alert */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    font-size: 14px;
    margin-bottom: 20px;
}

.alert-error {
    background: var(--error-light);
    color: var(--error);
    border: 1px solid #fca5a5;
}

.alert-info {
    background: var(--primary-light);
    color: var(--primary);
    border: 1px solid #93c5fd;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
}

.spinner-dark {
    border-color: rgba(0, 0, 0, 0.1);
    border-top-color: var(--primary);
}

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

/* Responsive */
@media (max-width: 640px) {
    .header-banner {
        max-height: 180px;
    }

    .header-banner img {
        height: 180px;
    }

    .container {
        padding: 20px 16px;
    }

    .profile-avatar {
        width: 80px;
        height: 80px;
    }

    .has-banner .profile-avatar {
        width: 88px;
        height: 88px;
    }

    .app-header h1 {
        font-size: 20px;
    }

    .booking-panel {
        padding: 20px;
    }

    .booking-steps {
        flex-wrap: wrap;
    }

    .step-connector {
        display: none;
    }

    .calendar-container {
        display: block;
        width: 100%;
    }

    .time-slots-container {
        display: block;
        width: 100%;
        margin-left: 0;
        margin-top: 24px;
    }

    .time-slots-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}