/* ===================================
   DataShield IQ — Corporate Brochureware
   Clean & Corporate Design System
   =================================== */

/* --- Custom Properties --- */
:root {
    --color-primary: #0A1628;
    --color-primary-light: #1B2E4A;
    --color-accent: #2563EB;
    --color-accent-hover: #1D4ED8;
    --color-accent-light: #DBEAFE;
    --color-accent-bg: #EFF6FF;
    --color-violet: #7C3AED;
    --color-violet-light: #EDE9FE;
    --color-teal: #0891B2;
    --color-teal-light: #E0F7FA;
    --color-green: #059669;
    --color-green-light: #D1FAE5;
    --color-surface: #F8FAFC;
    --color-white: #FFFFFF;
    --color-text: #0F172A;
    --color-text-secondary: #64748B;
    --color-text-tertiary: #94A3B8;
    --color-border: #E2E8F0;
    --color-border-light: #F1F5F9;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    --spacing-5xl: 8rem;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    --container-max: 1200px;
    --nav-height: 72px;
}

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-white);
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* --- Layout --- */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

/* --- Section Headers --- */
.section-header {
    text-align: center;
    max-width: 680px;
    margin: 0 auto var(--spacing-3xl);
}

.section-header--left {
    text-align: left;
    margin: 0 0 var(--spacing-xl);
}

.section-header__tag {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-md);
}

.section-header__title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.15;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.section-header__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-family);
    font-weight: 600;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
    gap: var(--spacing-xs);
}

.btn--sm {
    font-size: var(--font-size-sm);
    padding: 8px 18px;
}

.btn--lg {
    font-size: var(--font-size-base);
    padding: 14px 28px;
}

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

.btn--primary:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

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

.btn--outline:hover {
    border-color: var(--color-text-secondary);
    transform: translateY(-1px);
}

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

.btn--white:hover {
    background: var(--color-accent-light);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn--outline-white {
    background: transparent;
    color: var(--color-white);
    border-color: rgba(255, 255, 255, 0.3);
}

.btn--outline-white:hover {
    border-color: rgba(255, 255, 255, 0.6);
    transform: translateY(-1px);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border-light);
    z-index: 1000;
    transition: all var(--transition-base);
}

.nav--scrolled {
    box-shadow: var(--shadow-sm);
}

.nav__container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    color: var(--color-text);
    letter-spacing: -0.01em;
}

.nav__logo strong {
    font-weight: 800;
}

.nav__logo-icon {
    width: 32px;
    height: 32px;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.nav__link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav__link:hover {
    color: var(--color-text);
}

.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.nav__mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav__mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

/* --- Hero --- */
.hero {
    position: relative;
    padding: calc(var(--nav-height) + var(--spacing-5xl)) 0 var(--spacing-5xl);
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero__grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(37, 99, 235, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(37, 99, 235, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, black 30%, transparent 100%);
}

.hero__content {
    position: relative;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: var(--color-accent-bg);
    color: var(--color-accent);
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 6px 16px;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-xl);
}

.hero__badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero__title {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-text);
    margin-bottom: var(--spacing-xl);
    letter-spacing: -0.03em;
}

.hero__title--accent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-violet) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
    max-width: 620px;
    margin-left: auto;
    margin-right: auto;
}

.hero__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero__proof {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2xl);
    padding-top: var(--spacing-2xl);
    border-top: 1px solid var(--color-border);
}

.hero__proof-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.hero__proof-number {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
}

.hero__proof-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-weight: 500;
}

.hero__proof-divider {
    width: 1px;
    height: 40px;
    background: var(--color-border);
}

/* --- Trusted --- */
.trusted {
    padding: var(--spacing-3xl) 0;
    border-bottom: 1px solid var(--color-border-light);
}

.trusted__label {
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-xl);
}

.trusted__logos {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3xl);
    flex-wrap: wrap;
}

.trusted__logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text-tertiary);
    opacity: 0.4;
    letter-spacing: 0.02em;
}

/* --- Features --- */
.features {
    padding: var(--spacing-5xl) 0;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-border);
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.feature-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.feature-card__icon svg {
    width: 24px;
    height: 24px;
}

.feature-card__icon--blue {
    background: var(--color-accent-light);
    color: var(--color-accent);
}

.feature-card__icon--violet {
    background: var(--color-violet-light);
    color: var(--color-violet);
}

.feature-card__icon--teal {
    background: var(--color-teal-light);
    color: var(--color-teal);
}

.feature-card__icon--green {
    background: var(--color-green-light);
    color: var(--color-green);
}

.feature-card__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.01em;
}

.feature-card__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.feature-card__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.feature-card__list li {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    padding-left: var(--spacing-lg);
    position: relative;
}

.feature-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--color-accent);
    opacity: 0.5;
}

/* --- How It Works --- */
.how-it-works {
    padding: var(--spacing-5xl) 0;
    background: var(--color-surface);
}

.steps {
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
}

.step__number {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-accent);
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.step__content {
    padding-top: 4px;
}

.step__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.step__description {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.step__connector {
    width: 2px;
    height: 40px;
    background: var(--color-border);
    margin-left: 27px;
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

/* --- Compliance --- */
.compliance {
    padding: var(--spacing-5xl) 0;
}

.compliance__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.compliance__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-text);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.compliance__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
}

.compliance__badges {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.compliance__badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.compliance__badge-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
}

.compliance__badge-icon svg {
    width: 20px;
    height: 20px;
}

.compliance__badge span {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.compliance__features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-md);
}

.compliance__feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.compliance__feature svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-green);
}

/* --- About --- */
.about {
    padding: var(--spacing-5xl) 0;
    background: var(--color-surface);
}

.about__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.about__content p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.about__content p:last-child {
    margin-bottom: 0;
}

/* --- CTA --- */
.cta {
    padding: var(--spacing-5xl) 0;
    background: var(--color-primary);
}

.cta__inner {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta__title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--color-white);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

.cta__subtitle {
    font-size: var(--font-size-lg);
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: var(--spacing-2xl);
}

.cta__actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.cta__note {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.4);
}

/* --- Footer --- */
.footer {
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    background: var(--color-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer__inner {
    display: flex;
    justify-content: space-between;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    margin-bottom: var(--spacing-xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand {
    max-width: 300px;
}

.footer__brand .nav__logo {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.footer__tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.6;
}

.footer__links {
    display: flex;
    gap: var(--spacing-3xl);
}

.footer__col {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__col h4 {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-xs);
}

.footer__col a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast);
}

.footer__col a:hover {
    color: rgba(255, 255, 255, 0.8);
}

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

.footer__bottom p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.3);
}

.footer__legal {
    display: flex;
    gap: var(--spacing-xl);
}

.footer__legal a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.3);
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: rgba(255, 255, 255, 0.6);
}

/* --- Animations --- */
[data-animate] {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .hero__title {
        font-size: var(--font-size-4xl);
    }

    .section-header__title {
        font-size: var(--font-size-3xl);
    }

    .compliance__inner,
    .about__inner {
        grid-template-columns: 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }

    .nav__links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-white);
        padding: var(--spacing-lg) var(--spacing-xl);
        border-bottom: 1px solid var(--color-border);
        gap: var(--spacing-md);
    }

    .nav__links.is-open {
        display: flex;
    }

    .nav__mobile-toggle {
        display: flex;
    }

    .nav__actions .btn {
        display: none;
    }

    .hero {
        padding: calc(var(--nav-height) + var(--spacing-3xl)) 0 var(--spacing-3xl);
    }

    .hero__title {
        font-size: var(--font-size-3xl);
    }

    .hero__subtitle {
        font-size: var(--font-size-base);
    }

    .hero__actions {
        flex-direction: column;
    }

    .hero__actions .btn {
        width: 100%;
    }

    .hero__proof {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .hero__proof-divider {
        width: 40px;
        height: 1px;
    }

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

    .trusted__logos {
        gap: var(--spacing-xl);
    }

    .trusted__logo {
        font-size: var(--font-size-base);
    }

    .section-header__title {
        font-size: var(--font-size-2xl);
    }

    .compliance__title {
        font-size: var(--font-size-2xl);
    }

    .cta__title {
        font-size: var(--font-size-2xl);
    }

    .cta__actions {
        flex-direction: column;
    }

    .cta__actions .btn {
        width: 100%;
    }

    .footer__inner {
        flex-direction: column;
        gap: var(--spacing-2xl);
    }

    .footer__links {
        flex-wrap: wrap;
        gap: var(--spacing-2xl);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

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

/* --- Cookie Consent Banner --- */
.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.08);
    padding: var(--spacing-lg) 0;
    animation: slideUp 0.4s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.cookie-banner[hidden] {
    display: none;
}

.cookie-banner__inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.cookie-banner__text p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.cookie-banner__text a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.cookie-banner__text a:hover {
    color: var(--color-accent-hover);
}

.cookie-banner__actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .cookie-banner__inner {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .cookie-banner__actions {
        width: 100%;
        justify-content: center;
    }
}