:root {
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --surface-bg: #ffffff;
    --background: #f8fafc;
    --navbar-bg: rgba(255, 255, 255, 0.65);
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border: #e2e8f0;
    --radius-lg: 16px;
    --radius-md: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-soft: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-hover: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

:root[data-theme="dark"] {
    --surface-bg: #0f172a;
    --background: #020617;
    --navbar-bg: rgba(15, 23, 42, 0.75);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border: #1e293b;
    --shadow-soft: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.5);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme]) {
        --surface-bg: #0f172a;
        --background: #020617;
        --navbar-bg: rgba(15, 23, 42, 0.75);
        --text-primary: #f8fafc;
        --text-secondary: #94a3b8;
        --border: #1e293b;
        --shadow-soft: 0 4px 6px -1px rgba(0,0,0,0.4);
        --shadow-hover: 0 20px 25px -5px rgba(0,0,0,0.5);
    }
}

:root[data-theme="dark"] .hero {
    background: radial-gradient(circle at top right, rgba(37,99,235,0.2) 0%, #020617 55%);
}

:root[data-theme="dark"] .accordion-header:hover {
    background: #0b1220;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--background);
}
::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: var(--radius-lg);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

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

body {
    font-family: 'Inter Variable', 'Inter', system-ui, -apple-system, sans-serif;
    color: var(--text-primary);
    background-color: var(--background);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

/* Navigation */
.navbar {
    background: var(--navbar-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.navbar-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
    letter-spacing: -0.05em;
    transition: var(--transition);
}

.brand:hover {
    color: var(--primary-hover);
}

.nav-link-custom {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    position: relative;
    padding-bottom: 2px;
    transition: var(--transition);
}

.nav-link-custom::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: linear-gradient(to right, var(--primary), #60a5fa);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.nav-link-custom:hover {
    color: var(--primary);
}

.nav-link-custom:hover::after {
    width: 100%;
}

.hamburger-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 4px;
    width: 42px;
    height: 38px;
    border: 1px solid var(--border);
    background: var(--surface-bg);
    border-radius: 10px;
    cursor: pointer;
}

.hamburger-btn span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text-primary);
    margin: 0 auto;
    transition: var(--transition);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 1px solid var(--border);
    background: var(--surface-bg);
    color: var(--text-primary);
    border-radius: 999px;
    padding: 0.4rem 0.75rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.theme-toggle:hover {
    border-color: var(--primary);
    transform: translateY(-1px);
}

/* Utilities */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    border: none;
    font-size: 1rem;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px) scale(1.02);
    box-shadow: 0 15px 25px -5px rgba(37, 99, 235, 0.4);
}

.btn-primary:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 4px 6px -1px rgba(37, 99, 235, 0.2);
}

.floating-btn {
    animation: floatAnimation 3s ease-in-out infinite;
}
@keyframes floatAnimation {
    0% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
    100% { transform: translateY(0); }
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    text-align: center;
    background: radial-gradient(circle at top right, rgba(37,99,235,0.1) 0%, rgba(248,250,252,1) 50%);
    padding: 4rem 2rem;
}

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

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(to right, #1e3a8a, #3b82f6);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: fadeUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    animation: fadeUp 1s ease-out;
}

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

/* Authentication & Forms */
.auth-wrapper {
    min-height: calc(100vh - 70px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.auth-card {
    background: var(--surface-bg);
    padding: 3rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-hover);
    width: 100%;
    max-width: 480px;
    border: 1px solid var(--border);
}

.auth-header {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-header h2 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.auth-header p {
    color: var(--text-secondary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background: var(--surface-bg);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: inherit;
    font-size: 1rem;
}

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

.password-field {
    position: relative;
}

.password-field .form-control {
    padding-right: 3.25rem;
}

.password-toggle-btn {
    position: absolute;
    top: 50%;
    right: 0.75rem;
    transform: translateY(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 999px;
    transition: var(--transition);
}

.password-toggle-btn:hover {
    color: var(--text-primary);
    background: rgba(148, 163, 184, 0.12);
}

.password-toggle-btn:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.form-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

.text-danger {
    color: #ef4444;
}

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

.mt-4 {
    margin-top: 1rem;
}

.auth-links a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Sections & Structural Layouts */
.section {
    padding: 5rem 2rem;
}

.section-title {
    font-size: 2.25rem;
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 3rem;
    font-weight: 800;
}

.section-bg-light {
    background: var(--surface-bg);
}

.section-bg-dark {
    background: var(--background);
}

/* Grid Frameworks */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(1, 1fr);
    gap: 3rem;
}
@media (min-width: 768px) {
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Feature & workflow cards */
.feature-card {
    background: var(--surface-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: -100%; width: 50%; height: 100%;
    background: linear-gradient(to right, rgba(255,255,255,0) 0%, rgba(255,255,255,0.05) 50%, rgba(255,255,255,0) 100%);
    transform: skewX(-25deg);
    transition: left 0.7s ease;
}

.feature-card:hover::before {
    left: 200%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(37, 99, 235, 0.3);
}

.feature-card:hover .feature-icon {
    transform: scale(1.15) rotate(5deg);
    background: var(--primary);
    color: white;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    font-size: 1.5rem;
    transition: var(--transition);
}

/* FAQ Accordion */
.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    border: 1px solid var(--border);
    margin-bottom: 1rem;
    border-radius: var(--radius-md);
    background: var(--surface-bg);
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    padding: 1.5rem;
    text-align: left;
    background: none;
    border: none;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: inherit;
}

.accordion-header:hover {
    background: #f8fafc;
}

.accordion-icon {
    transition: transform 0.3s ease;
}

.accordion-item.active .accordion-icon {
    transform: rotate(180deg);
}

.accordion-content {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    color: var(--text-secondary);
}

.accordion-item.active .accordion-content {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

/* Testimonials */
.testimonial-card {
    background: var(--surface-bg);
    padding: 2rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    position: relative;
}

.quote-icon {
    position: absolute;
    top: -15px;
    left: 20px;
    background: var(--primary);
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

/* Footer Section */
.footer-dark {
    background: #0f172a;
    color: #94a3b8;
    padding: 4rem 2rem 2rem;
}

.footer-top {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
    max-width: 1280px;
    margin: 0 auto;
}

.footer-title {
    color: white;
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid #1e293b;
    padding-top: 2rem;
    text-align: center;
    max-width: 1280px;
    margin: 0 auto;
}

/* Workflows list */
.workflow-step {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.workflow-num {
    background: var(--primary);
    color: white;
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-weight: 700;
    font-size: 1.2rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: var(--surface-bg);
    width: 100%;
    max-width: 500px;
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin: 1rem;
    overflow: hidden;
}

.modal-overlay.active .modal-content {
    transform: scale(1);
}

.modal-header {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s;
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 0 1.5rem 1.5rem;
}

.contact-countdown-fab {
    position: fixed;
    left: 1rem;
    bottom: 1rem;
    z-index: 1200;
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    padding: 0.7rem 1rem;
    border-radius: 999px;
    border: 1px solid #0f172a;
    background: #0f172a;
    color: #ffffff;
    text-decoration: none;
    box-shadow: 0 14px 30px -12px rgba(15, 23, 42, 0.55);
}

.countdown-label {
    font-size: 0.85rem;
    opacity: 0.9;
}

.countdown-time {
    font-size: 0.9rem;
    font-weight: 700;
}

.two-col-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 1024px) {
    .navbar-container {
        padding: 0.9rem 1rem;
        gap: 0.75rem;
    }

    .nav-links {
        gap: 0.75rem !important;
        flex-wrap: wrap;
        justify-content: flex-end;
    }

    .container {
        padding: 1.25rem;
    }
}

@media (max-width: 768px) {
    .navbar-container {
        align-items: center;
        justify-content: space-between;
        flex-direction: row;
        flex-wrap: wrap;
    }

    .hamburger-btn {
        display: inline-flex;
    }

    .nav-actions {
        margin-left: auto;
    }

    .nav-links {
        display: none !important;
        width: 100%;
        justify-content: flex-start !important;
        flex-direction: column;
        align-items: stretch !important;
        gap: 0.75rem !important;
        padding-top: 0.75rem;
    }

    .nav-links.open {
        display: flex !important;
    }

    .nav-links > * {
        width: 100%;
    }

    .nav-links .btn,
    .nav-links .nav-link-custom {
        justify-content: center;
    }

    .hero {
        min-height: auto;
        padding: 3rem 1rem;
    }

    .hero-title {
        font-size: 2rem !important;
        line-height: 1.2 !important;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 3rem 1rem;
    }

    .section-title {
        font-size: 1.7rem;
        margin-bottom: 2rem;
    }

    .grid-2,
    .grid-3,
    .two-col-grid {
        grid-template-columns: 1fr !important;
        gap: 1rem;
    }

    .auth-wrapper {
        padding: 1rem;
    }

    .auth-card {
        padding: 1.25rem;
    }

    .auth-card .btn {
        width: 100%;
    }

    table {
        min-width: 640px;
    }

    .contact-countdown-fab {
        left: 0.75rem;
        right: 0.75rem;
        bottom: 0.75rem;
        justify-content: center;
    }
}