/* =========================================
   LONGTAIL MEDIA LIMITED - Corporate Website
   Shared Stylesheet
   ========================================= */

/* -----------------------------------------
   CSS Custom Properties (Variables)
   ----------------------------------------- */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-off-white: #f8f9fa;
    --color-light-grey: #e9ecef;
    --color-medium-grey: #6c757d;
    --color-charcoal: #2d3436;
    --color-dark: #1a1a2e;
    --color-deep-blue: #0a1628;
    --color-accent-blue: #3d5a80;
    --color-accent-light: #98c1d9;
    --color-accent-soft: #e0fbfc;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-weight: var(--font-weight-regular);
    line-height: 1.6;
    color: var(--color-charcoal);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* -----------------------------------------
   Typography
   ----------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: 1.3;
    color: var(--color-dark);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-sm);
}

.lead {
    font-size: 1.125rem;
    color: var(--color-medium-grey);
    line-height: 1.7;
}

/* -----------------------------------------
   Layout Utilities
   ----------------------------------------- */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
}

.section--grey {
    background-color: var(--color-off-white);
}

.section--dark {
    background-color: var(--color-deep-blue);
    color: var(--color-white);
}

.section--dark h2,
.section--dark h3,
.section--dark h4 {
    color: var(--color-white);
}

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

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid--2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid--3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid--4 {
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* -----------------------------------------
   Header & Navigation
   ----------------------------------------- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: box-shadow var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
}

.logo__icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-accent-blue), var(--color-deep-blue));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: var(--font-weight-bold);
    font-size: 1rem;
}

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

.nav__list {
    display: flex;
    gap: var(--spacing-lg);
}

.nav__link {
    font-weight: var(--font-weight-medium);
    color: var(--color-charcoal);
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent-blue);
    transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active::after {
    width: 100%;
}

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

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-xs);
}

.nav-toggle__bar {
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle.active .nav-toggle__bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .nav-toggle__bar:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active .nav-toggle__bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* -----------------------------------------
   Hero Section
   ----------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-accent-blue) 100%);
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero__background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.15;
    background-image: url('../images/hero-bg.svg');
    background-size: cover;
    background-position: center;
}

.hero__content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    color: var(--color-white);
}

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

.hero__tagline {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: var(--font-weight-light);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.hero__cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Page Hero (for inner pages) */
.page-hero {
    padding: calc(var(--header-height) + var(--spacing-xxl)) 0 var(--spacing-xxl);
    background: linear-gradient(135deg, var(--color-deep-blue) 0%, var(--color-accent-blue) 100%);
    color: var(--color-white);
    text-align: center;
}

.page-hero__title {
    color: var(--color-white);
    margin-bottom: var(--spacing-sm);
}

.page-hero__subtitle {
    font-size: 1.125rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

/* -----------------------------------------
   Buttons
   ----------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    cursor: pointer;
}

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

.btn--primary:hover {
    background-color: var(--color-accent-soft);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--secondary {
    background-color: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
}

.btn--secondary:hover {
    background-color: var(--color-white);
    color: var(--color-deep-blue);
}

.btn--dark {
    background-color: var(--color-deep-blue);
    color: var(--color-white);
}

.btn--dark:hover {
    background-color: var(--color-accent-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* -----------------------------------------
   Cards
   ----------------------------------------- */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

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

.card__icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--color-accent-soft), var(--color-accent-light));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-accent-blue);
    font-size: 1.5rem;
}

.card__title {
    margin-bottom: var(--spacing-sm);
}

.card__text {
    color: var(--color-medium-grey);
}

/* -----------------------------------------
   Section Headers
   ----------------------------------------- */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-xl);
}

.section-header__title {
    margin-bottom: var(--spacing-sm);
}

.section-header__text {
    color: var(--color-medium-grey);
    font-size: 1.125rem;
}

/* -----------------------------------------
   Trust & Compliance Section
   ----------------------------------------- */
.trust-badges {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-lg);
}

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

.trust-badge__label {
    font-size: 0.875rem;
    color: var(--color-medium-grey);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

.trust-badge__value {
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-dark);
}

/* -----------------------------------------
   Contact Form
   ----------------------------------------- */
.form {
    max-width: 600px;
    margin: 0 auto;
}

.form__group {
    margin-bottom: var(--spacing-md);
}

.form__label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    color: var(--color-charcoal);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    font-family: inherit;
    font-size: 1rem;
    border: 2px solid var(--color-light-grey);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: var(--color-white);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 0 3px rgba(61, 90, 128, 0.1);
}

.form__input.error,
.form__textarea.error {
    border-color: #dc3545;
}

.form__textarea {
    min-height: 150px;
    resize: vertical;
}

.form__error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form__error.visible {
    display: block;
}

.form__submit {
    width: 100%;
    margin-top: var(--spacing-sm);
}

.form__success {
    display: none;
    padding: var(--spacing-md);
    background-color: #d4edda;
    color: #155724;
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--spacing-md);
}

.form__success.visible {
    display: block;
}

/* -----------------------------------------
   Contact Info
   ----------------------------------------- */
.contact-info {
    display: grid;
    gap: var(--spacing-lg);
}

.contact-info__item {
    display: flex;
    gap: var(--spacing-md);
}

.contact-info__icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-accent-soft);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-blue);
    flex-shrink: 0;
}

.contact-info__content h4 {
    margin-bottom: var(--spacing-xs);
}

.contact-info__content p {
    color: var(--color-medium-grey);
    margin-bottom: 0;
}

.contact-info__content a {
    color: var(--color-accent-blue);
}

.contact-info__content a:hover {
    text-decoration: underline;
}

/* -----------------------------------------
   Footer
   ----------------------------------------- */
.footer {
    background-color: var(--color-deep-blue);
    color: var(--color-white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

.footer__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer__brand {
    max-width: 300px;
}

.footer__logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.footer__description {
    opacity: 0.8;
    font-size: 0.9375rem;
    line-height: 1.7;
}

.footer__title {
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

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

.footer__link {
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer__link:hover {
    opacity: 1;
}

.footer__contact-item {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    opacity: 0.8;
    font-size: 0.9375rem;
}

.footer__contact-icon {
    flex-shrink: 0;
    opacity: 0.6;
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
}

.footer__copyright {
    opacity: 0.7;
    font-size: 0.875rem;
}

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

.footer__legal-link {
    opacity: 0.7;
    font-size: 0.875rem;
    transition: opacity var(--transition-fast);
}

.footer__legal-link:hover {
    opacity: 1;
}

.footer__registration {
    width: 100%;
    text-align: center;
    opacity: 0.6;
    font-size: 0.8125rem;
    margin-top: var(--spacing-md);
}

/* -----------------------------------------
   Legal Pages
   ----------------------------------------- */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
}

.legal-content h2 {
    font-size: 1.5rem;
    margin: var(--spacing-xl) 0 var(--spacing-md);
}

.legal-content h3 {
    font-size: 1.25rem;
    margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.legal-content p {
    color: var(--color-charcoal);
    line-height: 1.8;
}

.legal-content ul,
.legal-content ol {
    margin: var(--spacing-md) 0;
    padding-left: var(--spacing-lg);
}

.legal-content li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.legal-content ul li {
    list-style-type: disc;
}

.legal-content ol li {
    list-style-type: decimal;
}

.legal-content .last-updated {
    font-style: italic;
    color: var(--color-medium-grey);
    margin-bottom: var(--spacing-xl);
}

/* -----------------------------------------
   Animations
   ----------------------------------------- */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

.slide-up {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-up.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation delays */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }

/* -----------------------------------------
   Responsive Design
   ----------------------------------------- */

/* Tablet and below */
@media (max-width: 992px) {
    .nav__list {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        align-items: center;
        padding: var(--spacing-lg);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav__list.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .hero__content {
        text-align: center;
    }

    .hero__cta {
        justify-content: center;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --spacing-xxl: 3rem;
    }

    .section {
        padding: var(--spacing-xl) 0;
    }

    .grid--2,
    .grid--3,
    .grid--4 {
        grid-template-columns: 1fr;
    }

    .footer__grid {
        text-align: center;
    }

    .footer__brand {
        max-width: 100%;
    }

    .footer__logo {
        justify-content: center;
    }

    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }

    .trust-badges {
        flex-direction: column;
        align-items: center;
    }

    .contact-info__item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
}

/* Small mobile */
@media (max-width: 480px) {
    .btn {
        width: 100%;
    }

    .hero__cta {
        flex-direction: column;
    }
}

/* -----------------------------------------
   Print Styles
   ----------------------------------------- */
@media print {
    .header,
    .nav-toggle,
    .hero__cta {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-lg);
    }

    .section {
        padding: var(--spacing-md) 0;
    }
}