/* ==========================================
   FreelancerKit - Professional Business Tools
   ========================================== */

:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #A29BFE;
    --secondary: #00CEC9;
    --accent: #FD79A8;
    --dark: #0F0F23;
    --dark-2: #1A1A2E;
    --dark-3: #16213E;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-400: #CED4DA;
    --gray-500: #ADB5BD;
    --gray-600: #6C757D;
    --gray-700: #495057;
    --gray-800: #343A40;
    --white: #FFFFFF;
    --success: #00B894;
    --warning: #FDCB6E;
    --danger: #E17055;
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 60px -12px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 25px 80px -12px rgba(0, 0, 0, 0.25);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--white);
    color: var(--gray-800);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==========================================
   Typography
   ========================================== */

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 12px;
}

.section-subtitle {
    text-align: center;
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-sm { padding: 8px 20px; font-size: 0.85rem; }
.btn-lg { padding: 16px 36px; font-size: 1.05rem; }
.btn-block { width: 100%; }
.btn-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--gray-200);
    color: var(--gray-600);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}
.btn-icon:hover { background: var(--danger); color: white; }

/* ==========================================
   Navigation
   ========================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--gray-200);
    padding: 16px 0;
}

.nav-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 800;
}

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

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover { color: var(--primary); }

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* ==========================================
   Hero Section
   ========================================== */

.hero {
    padding: 160px 0 100px;
    text-align: center;
    background: linear-gradient(180deg, #F8F7FF 0%, var(--white) 100%);
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1), rgba(0, 206, 201, 0.1));
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 24px;
}

.hero h1 {
    font-size: 3.8rem;
    font-weight: 800;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto 40px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
}

.stat { text-align: center; }
.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}
.stat-label {
    font-size: 0.85rem;
    color: var(--gray-500);
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--gray-300);
}

/* ==========================================
   Features
   ========================================== */

.features {
    padding: 100px 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    padding: 36px;
    border-radius: var(--radius-lg);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    background: var(--white);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-light);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 8px;
}

.feature-card p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

/* ==========================================
   Tools Section
   ========================================== */

.tools-section {
    padding: 100px 0;
    background: var(--gray-100);
}

.tool-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 12px 24px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

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

.tab-btn:hover:not(.active) {
    border-color: var(--primary-light);
}

.tool-panel {
    display: none;
}

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

.tool-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
}

.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--gray-200);
}

.tool-header h3 {
    font-size: 1.4rem;
}

/* ==========================================
   Forms
   ========================================== */

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

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 6px;
    color: var(--gray-700);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 10px 14px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-family: inherit;
    transition: var(--transition);
    background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(108, 92, 231, 0.1);
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 24px; }

/* ==========================================
   Invoice Line Items
   ========================================== */

.line-item-header {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr 40px;
    gap: 8px;
    padding: 8px 0;
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.line-item {
    display: grid;
    grid-template-columns: 3fr 1fr 1fr 1fr 40px;
    gap: 8px;
    align-items: center;
    margin-bottom: 8px;
}

.line-item input {
    padding: 8px 12px;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
}

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

.line-amount {
    font-weight: 600;
    color: var(--primary);
    text-align: right;
    padding-right: 4px;
}

/* ==========================================
   Invoice Preview
   ========================================== */

.invoice-preview {
    margin-top: 40px;
    padding: 40px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--white);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 3px solid var(--primary);
}

.preview-header h2 {
    font-size: 1.5rem;
    color: var(--dark);
}

.preview-header p {
    color: var(--gray-600);
    margin-top: 4px;
}

.preview-invoice-info {
    text-align: right;
}

.preview-invoice-info h2 {
    color: var(--primary);
    font-size: 2rem;
    letter-spacing: 2px;
}

.preview-client {
    margin-bottom: 24px;
}

.preview-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 24px;
}

.preview-table th {
    background: var(--gray-100);
    padding: 12px 16px;
    text-align: left;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--gray-600);
    border-bottom: 2px solid var(--gray-300);
}

.preview-table th:last-child { text-align: right; }

.preview-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--gray-200);
}

.preview-table td:last-child {
    text-align: right;
    font-weight: 600;
}

.preview-totals {
    max-width: 300px;
    margin-left: auto;
}

.total-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 0.95rem;
}

.total-final {
    border-top: 2px solid var(--dark);
    margin-top: 8px;
    padding-top: 12px;
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--primary);
}

.preview-notes {
    margin-top: 32px;
    padding: 16px;
    background: var(--gray-100);
    border-radius: var(--radius-sm);
    color: var(--gray-600);
    font-size: 0.9rem;
    white-space: pre-wrap;
}

/* ==========================================
   Proposal Preview
   ========================================== */

.proposal-preview {
    margin-top: 40px;
    padding: 40px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    background: var(--white);
}

.prop-preview-header {
    text-align: center;
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 3px solid var(--primary);
}

.prop-preview-header h1 {
    font-size: 2rem;
    color: var(--primary);
    letter-spacing: 3px;
    margin-bottom: 16px;
}

.prop-meta p {
    color: var(--gray-600);
    margin: 4px 0;
}

.proposal-preview h2 {
    font-size: 1.5rem;
    margin-bottom: 24px;
    color: var(--dark);
}

.prop-section {
    margin-bottom: 28px;
}

.prop-section h3 {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.prop-section p {
    color: var(--gray-700);
    line-height: 1.7;
    white-space: pre-wrap;
}

.prop-highlight {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(0, 206, 201, 0.05));
    padding: 24px;
    border-radius: var(--radius);
    border: 1px solid var(--primary-light);
}

.prop-detail {
    text-align: center;
}

.prop-detail span {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-600);
    margin-bottom: 4px;
}

.prop-detail strong {
    font-size: 1.5rem;
    color: var(--primary);
}

/* ==========================================
   Rate Calculator Results
   ========================================== */

.calc-results {
    margin-top: 32px;
    padding: 32px;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.05), rgba(0, 206, 201, 0.05));
    border-radius: var(--radius-lg);
    border: 1px solid var(--primary-light);
}

.calc-results h4 {
    text-align: center;
    margin-bottom: 24px;
    color: var(--primary);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.calc-card {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
}

.calc-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.calc-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.calc-breakdown {
    background: var(--white);
    padding: 24px;
    border-radius: var(--radius);
}

.calc-breakdown h4 {
    margin-bottom: 16px;
}

.breakdown-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    color: var(--gray-700);
    border-bottom: 1px solid var(--gray-200);
}

.breakdown-final {
    border-bottom: none;
    border-top: 2px solid var(--primary);
    margin-top: 8px;
    padding-top: 12px;
    font-weight: 700;
    color: var(--primary);
    font-size: 1.1rem;
}

/* ==========================================
   Pricing Section
   ========================================== */

.pricing-section {
    padding: 100px 0;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: var(--white);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 40px;
    position: relative;
    transition: var(--transition);
}

.pricing-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
    border-color: var(--primary);
    box-shadow: var(--shadow-xl);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-4px);
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 4px 20px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--white);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    border-radius: 50px;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-header h3 {
    font-size: 1.3rem;
    margin-bottom: 8px;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
}

.pricing-header p {
    color: var(--gray-600);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--gray-700);
}

/* ==========================================
   Testimonials
   ========================================== */

.testimonials {
    padding: 100px 0;
    background: var(--gray-100);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 48px;
}

.testimonial-card {
    background: var(--white);
    padding: 32px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.stars {
    color: var(--warning);
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.testimonial-card p {
    color: var(--gray-700);
    font-style: italic;
    margin-bottom: 20px;
    line-height: 1.7;
}

.testimonial-author strong {
    display: block;
    color: var(--dark);
}

.testimonial-author span {
    color: var(--gray-500);
    font-size: 0.85rem;
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
    padding: 100px 0;
    text-align: center;
    background: linear-gradient(135deg, var(--dark), var(--dark-3));
    color: var(--white);
}

.cta-section h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.cta-section p {
    color: var(--gray-400);
    font-size: 1.1rem;
    margin-bottom: 32px;
}

.cta-guarantee {
    margin-top: 16px !important;
    font-size: 0.9rem !important;
    color: var(--gray-500) !important;
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    padding: 48px 0 24px;
    background: var(--dark);
    color: var(--gray-400);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--dark-3);
    margin-bottom: 24px;
}

.footer .logo-text { color: var(--white); }

.footer-bottom {
    text-align: center;
    font-size: 0.85rem;
}

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

@media (max-width: 968px) {
    .hero h1 { font-size: 2.8rem; }
    .features-grid { grid-template-columns: repeat(2, 1fr); }
    .testimonials-grid { grid-template-columns: 1fr; }
    .calc-grid { grid-template-columns: repeat(2, 1fr); }
    .pricing-card.featured { transform: scale(1); }
    .pricing-card.featured:hover { transform: translateY(-4px); }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-menu-btn { display: block; }
    .hero h1 { font-size: 2.2rem; }
    .hero { padding: 120px 0 60px; }
    .section-title { font-size: 1.8rem; }
    .features-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .line-item-header { display: none; }
    .line-item {
        grid-template-columns: 1fr;
        gap: 8px;
        padding: 16px;
        background: var(--gray-100);
        border-radius: var(--radius-sm);
        margin-bottom: 12px;
    }
    .preview-header { flex-direction: column; gap: 16px; }
    .preview-invoice-info { text-align: left; }
    .pricing-grid { grid-template-columns: 1fr; }
    .prop-highlight { grid-template-columns: 1fr; }
    .calc-grid { grid-template-columns: 1fr 1fr; }
    .hero-stats { gap: 20px; }
    .tool-card { padding: 20px; }
    .invoice-preview, .proposal-preview { padding: 20px; }
    .cta-section h2 { font-size: 1.8rem; }
    .footer-content { flex-direction: column; gap: 12px; text-align: center; }
}

@media (max-width: 480px) {
    .hero h1 { font-size: 1.8rem; }
    .hero-cta { flex-direction: column; align-items: center; }
    .calc-grid { grid-template-columns: 1fr; }
}

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

@media print {
    .navbar, .hero, .features, .tool-tabs, .tool-header,
    .pricing-section, .testimonials, .cta-section, .footer,
    .invoice-form, .proposal-form, .calculator-form,
    .btn, button { display: none !important; }

    .tool-panel { display: block !important; }
    .invoice-preview, .proposal-preview {
        border: none;
        padding: 0;
        box-shadow: none;
    }
}

/* ==========================================
   Animations
   ========================================== */

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

.feature-card, .testimonial-card, .pricing-card {
    animation: fadeInUp 0.6s ease-out;
}