@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Comfortaa:wght@300;400;600;700&display=swap');

:root {
    --background: hsl(45, 85%, 97%);
    --foreground: hsl(25, 25%, 15%);
    --muted: hsl(45, 30%, 94%);
    --muted-foreground: hsl(25, 10%, 45%);
    --card: hsl(0, 0%, 100%);
    --card-foreground: hsl(25, 25%, 15%);
    --border: hsl(20, 20%, 88%);
    --input: hsl(20, 20%, 90%);
    --primary: hsl(15, 85%, 60%);
    --primary-foreground: hsl(0, 0%, 100%);
    --secondary: hsl(140, 45%, 85%);
    --secondary-foreground: hsl(140, 60%, 25%);
    --accent: hsl(270, 60%, 90%);
    --accent-foreground: hsl(270, 80%, 30%);
    --destructive: hsl(0, 84%, 60%);
    --ring: hsl(25, 25%, 15%);
    --radius: 1rem;

    --cream: hsl(45, 85%, 97%);
    --peach: hsl(15, 85%, 92%);
    --mint: hsl(140, 45%, 92%);
    --lavender: hsl(270, 60%, 95%);
    --soft-yellow: hsl(55, 85%, 90%);
    --coral: hsl(25, 85%, 85%);
    --soft-gray: hsl(220, 10%, 97%);
    --warm-gray: hsl(25, 10%, 50%);
    --invoice-blue: #4854a6;
}

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

body {
    font-family: 'Comfortaa', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: linear-gradient(135deg, var(--cream) 0%, var(--peach) 50%, var(--mint) 100%);
    min-height: 100vh;
    color: var(--foreground);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.min-h-screen {
    min-height: 100vh;
}

.header {
    text-align: center;
    padding: 48px 16px;
}

.header-content {
    max-width: 800px;
    margin: 0 auto;
}

.header-badge {
    display: inline-block;
    padding: 24px 40px;
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    background: linear-gradient(135deg, var(--soft-yellow) 0%, var(--peach) 100%);
    margin-bottom: 24px;
}

.header-title {
    font-size: 3rem;
    font-weight: 700;
    color: #1f2937;
    margin-bottom: 8px;
}

.header-subtitle {
    font-size: 1.25rem;
    color: var(--warm-gray);
    font-weight: 500;
}

.header-description {
    font-size: 1.1rem;
    color: var(--warm-gray);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px 64px;
}

.progress-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 40px;
    padding: 0 20px;
    flex-wrap: wrap;
    gap: 8px;
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.5;
    transition: all 0.3s ease;
}

.progress-step.active {
    opacity: 1;
}

.progress-step.completed {
    opacity: 1;
}

.step-circle {
    width: 56px;
    height: 56px;
    border-radius: 1rem;
    background: var(--soft-gray);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.progress-step.active .step-circle {
    background: linear-gradient(135deg, var(--peach) 0%, var(--coral) 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.progress-step.completed .step-circle {
    background: var(--mint);
}

.step-icon {
    font-size: 1.5rem;
}

.step-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--warm-gray);
}

.progress-step.active .step-label {
    color: var(--foreground);
}

.progress-line {
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--mint) 0%, var(--peach) 50%, var(--lavender) 100%);
    border-radius: 2px;
    margin-bottom: 24px;
}

.wizard-container {
    position: relative;
}

.wizard-step {
    display: none;
}

.wizard-step.active {
    display: block;
    animation: fadeSlideIn 0.4s ease;
}

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

.floating-card {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1.5rem;
    padding: 32px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    max-width: 800px;
    margin: 0 auto;
}

.floating-card:hover {
    box-shadow: 0 30px 60px -15px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.card-header {
    display: flex;
    align-items: center;
    margin-bottom: 24px;
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 16px;
    font-size: 1.5rem;
}

.card-icon.mint {
    background: var(--mint);
}

.card-icon.peach {
    background: var(--peach);
}

.card-icon.lavender {
    background: var(--lavender);
}

.card-icon.soft-yellow {
    background: var(--soft-yellow);
}

.card-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: #1f2937;
}

.card-description {
    color: var(--warm-gray);
    margin-bottom: 24px;
    font-size: 1rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 1rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 8px;
}

.form-hint {
    font-size: 0.875rem;
    color: var(--warm-gray);
    margin-top: 4px;
}

.input-field {
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid transparent;
    border-radius: 1rem;
    padding: 12px 16px;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
    width: 100%;
}

.input-field:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.95);
    border-color: var(--soft-yellow);
    box-shadow: 0 0 0 4px rgba(255, 243, 176, 0.2);
}

.input-field.textarea {
    resize: vertical;
    min-height: 80px;
}

.card-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    font-weight: 600;
    border-radius: 1rem;
    padding: 14px 28px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: var(--coral);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--secondary);
    color: var(--secondary-foreground);
    font-weight: 600;
    border-radius: 1rem;
    padding: 14px 28px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--mint);
    transform: translateY(-2px);
}

.upload-area {
    border: 3px dashed var(--border);
    border-radius: 1.5rem;
    padding: 48px 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.5);
    margin-bottom: 16px;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary);
    background: var(--peach);
}

.upload-icon {
    color: var(--warm-gray);
    margin-bottom: 16px;
}

.upload-area:hover .upload-icon {
    color: var(--primary);
}

.upload-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: #374151;
    margin-bottom: 4px;
}

.upload-hint {
    font-size: 0.9rem;
    color: var(--warm-gray);
}

.file-info.hidden {
    display: none;
}

.file-badge {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--mint);
    border-radius: 1rem;
}

.file-icon {
    font-size: 1.5rem;
}

.file-details {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.file-name {
    font-weight: 600;
    color: #1f2937;
}

.file-size {
    font-size: 0.875rem;
    color: var(--warm-gray);
}

.btn-remove {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--warm-gray);
    font-size: 1.25rem;
    padding: 4px 8px;
    border-radius: 8px;
    transition: all 0.2s ease;
}

.btn-remove:hover {
    background: rgba(0, 0, 0, 0.1);
    color: #1f2937;
}

.filter-feedback {
    background: var(--lavender);
    padding: 12px 16px;
    border-radius: 1rem;
    margin-bottom: 16px;
    font-size: 0.9rem;
    color: #374151;
}

.client-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 400px;
    overflow-y: auto;
    padding-right: 8px;
}

.client-card {
    background: var(--soft-gray);
    border-radius: 1rem;
    padding: 16px 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.client-card:hover {
    background: var(--cream);
}

.client-card.selected {
    background: var(--soft-yellow);
    border-color: var(--primary);
}

.client-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.client-name {
    font-weight: 600;
    font-size: 1.1rem;
    color: #1f2937;
}

.client-amount {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
}

.client-sessions {
    font-size: 0.875rem;
    color: var(--warm-gray);
}

.loading {
    color: var(--warm-gray);
    font-style: italic;
    padding: 20px;
    text-align: center;
}

.tabs {
    margin-bottom: 24px;
}

.tab-list {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    overflow-x: auto;
    padding-bottom: 8px;
}

.tab-btn {
    padding: 10px 20px;
    background: var(--soft-gray);
    border: none;
    border-radius: 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--warm-gray);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    font-family: inherit;
}

.tab-btn:hover {
    background: var(--cream);
    color: #374151;
}

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

.tab-content {
    min-height: 300px;
}

.invoice-preview {
    background: white;
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border: 1px solid #e5e7eb;
}

.invoice-header {
    background: var(--invoice-blue);
    color: white;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.invoice-title-text {
    font-size: 1.5rem;
    font-weight: 700;
}

.invoice-amount-due {
    text-align: right;
}

.invoice-amount-label {
    font-size: 0.75rem;
    opacity: 0.9;
}

.invoice-amount-value {
    font-size: 1.25rem;
    font-weight: 700;
}

.invoice-body {
    padding: 24px;
}

.invoice-parties {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    margin-bottom: 24px;
}

.party-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    color: var(--warm-gray);
    margin-bottom: 4px;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.party-value {
    color: #1f2937;
    font-weight: 500;
}

.invoice-meta {
    text-align: right;
    font-size: 0.8rem;
}

.invoice-meta-row {
    margin-bottom: 4px;
}

.invoice-meta-row strong {
    color: #374151;
}

.invoice-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 16px;
}

.invoice-table th {
    background: #f5f5f5;
    padding: 10px 12px;
    text-align: left;
    font-size: 0.7rem;
    text-transform: uppercase;
    color: #6b7280;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.invoice-table td {
    padding: 10px 12px;
    font-size: 0.85rem;
    border-bottom: 1px solid #e5e7eb;
}

.text-right {
    text-align: right;
}

.session-details {
    font-size: 0.75rem;
    color: #6b7280;
    margin-bottom: 16px;
    padding-left: 12px;
}

.session-detail-row {
    margin-bottom: 2px;
}

.invoice-totals {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 16px;
}

.totals-box {
    width: 250px;
}

.totals-row {
    display: flex;
    justify-content: space-between;
    padding: 6px 0;
    font-size: 0.85rem;
}

.totals-row.total {
    background: #f5f5f5;
    padding: 10px 12px;
    border-radius: 8px;
    font-weight: 700;
    margin-top: 8px;
}

.invoice-notes {
    border-top: 1px solid #e5e7eb;
    padding-top: 16px;
    font-size: 0.8rem;
}

.invoice-notes-title {
    font-weight: 700;
    margin-bottom: 4px;
    color: #374151;
}

.invoice-notes-text {
    color: #6b7280;
}

.btn-download-single {
    background: var(--mint);
    color: var(--secondary-foreground);
    font-weight: 600;
    border-radius: 1rem;
    padding: 10px 20px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
    margin-top: 16px;
    transition: all 0.3s ease;
}

.btn-download-single:hover {
    background: var(--secondary);
    transform: translateY(-1px);
}

.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    background: #1f2937;
    color: white;
    padding: 16px 24px;
    border-radius: 1rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    animation: toastIn 0.3s ease;
    max-width: 350px;
}

.toast.success {
    background: var(--mint);
    color: #1f2937;
}

.toast.error {
    background: #ef4444;
}

.toast-title {
    font-weight: 700;
    margin-bottom: 4px;
}

.toast-message {
    font-size: 0.9rem;
    opacity: 0.9;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.footer {
    text-align: center;
    padding: 24px;
    color: var(--warm-gray);
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .header-title {
        font-size: 2rem;
    }

    .header-badge {
        padding: 16px 24px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .card-actions {
        flex-direction: column;
    }

    .btn-primary,
    .btn-secondary {
        width: 100%;
    }

    .invoice-parties {
        grid-template-columns: 1fr;
    }

    .progress-line {
        display: none;
    }

    .floating-card {
        padding: 20px;
    }
}