/* =================================
   GLOBAL STYLES & VARIABLES
   ================================= */
:root {
    --color-background: #111827;
    --color-surface: #1F2937;
    --color-primary-text: #F9FAFB;
    --color-secondary-text: #9CA3AF;
    --color-accent: #22D3EE;
    --color-accent-hover: #67E8F9;
    
    --font-family-base: 'Inter', sans-serif;
    --font-family-heading: 'Poppins', sans-serif;

    --header-height: 70px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-primary-text);
    background-color: var(--color-background);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    color: var(--color-primary-text);
    line-height: 1.2;
}

a {
    color: var(--color-secondary-text);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

/* =================================
   HEADER
   ================================= */
.header {
    height: var(--header-height);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(17, 24, 39, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-surface);
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    font-family: var(--font-family-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-text);
}

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

.nav__list {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease-out;
}

.nav__link:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

.nav__link--cta {
    background-color: var(--color-accent);
    color: var(--color-background);
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

.nav__link--cta::after {
    display: none;
}

.burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.burger__line {
    width: 100%;
    height: 3px;
    background-color: var(--color-primary-text);
    border-radius: 3px;
    transition: all 0.3s ease;
}


/* =================================
   FOOTER
   ================================= */
.footer {
    padding: 4rem 0 2rem;
    background-color: var(--color-surface);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__container {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.footer__column--logo {
    grid-column: span 1;
}

.footer__copy {
    margin-top: 1rem;
    font-size: 0.9rem;
    color: var(--color-secondary-text);
}

.footer__title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--color-primary-text);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer__link {
    font-size: 0.95rem;
}

.footer__list--contacts .footer__item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    color: var(--color-secondary-text);
}

.footer__icon {
    width: 18px;
    height: 18px;
    margin-top: 3px;
    flex-shrink: 0;
    color: var(--color-accent);
}


/* =================================
   RESPONSIVE STYLES
   ================================= */
@media (max-width: 768px) {
    .nav {
        display: none; /* For now, will be implemented with JS later */
    }

    .burger {
        display: flex;
    }
    
    .footer__container {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }

    .footer__column--logo {
        grid-column: span 2;
        text-align: center;
    }
}

@media (max-width: 480px) {
    body {
        font-size: 15px;
    }
    
    .footer__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__column--logo {
        grid-column: span 1;
    }
    
    .footer__list--contacts .footer__item {
        justify-content: center;
        text-align: left;
    }
}

/* =================================
   BUTTONS
   ================================= */
.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-family-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-background);
    background-color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.button:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-background);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(34, 211, 238, 0.2);
}

.button__icon {
    width: 20px;
    height: 20px;
}

/* =================================
   HERO SECTION
   ================================= */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    padding-top: var(--header-height);
}

.hero__canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero__container {
    position: relative;
    z-index: 2;
}

.hero__content {
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInDown 1s ease-out forwards;
}

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

.hero__title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.hero__subtitle {
    font-size: 1.125rem;
    color: var(--color-secondary-text);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

/* --- Responsive for Hero --- */
@media (max-width: 768px) {
    .hero__title {
        font-size: 2.5rem;
    }
    .hero__subtitle {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 2rem;
    }
    .hero {
        min-height: 500px;
    }
}


/* =================================
   GENERAL SECTION STYLES
   ================================= */
.section {
    padding: 6rem 0;
}

.section-header {
    text-align: center;
    max-width: 750px;
    margin: 0 auto 4rem;
}

.section-header__title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-header__subtitle {
    font-size: 1.125rem;
    color: var(--color-secondary-text);
    line-height: 1.7;
}

/* =================================
   HOW IT WORKS SECTION
   ================================= */
.how-it-works {
    background-color: var(--color-background); /* Or a slightly different shade if needed */
}

.how-it-works__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.card {
    background-color: var(--color-surface);
    padding: 2.5rem 2rem;
    border-radius: 16px;
    border: 1px solid transparent;
    text-align: center;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
}

.card__icon-wrapper {
    margin: 0 auto 1.5rem;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(34, 211, 238, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card__icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
}

.card__title {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.card__text {
    color: var(--color-secondary-text);
    font-size: 0.95rem;
}

/* --- Responsive for How It Works --- */
@media (max-width: 992px) {
    .how-it-works__grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }
    .section-header__title {
        font-size: 2rem;
    }
    .section-header__subtitle {
        font-size: 1rem;
    }
}

/* =================================
   TOOLS SECTION
   ================================= */
.tools {
    background-color: var(--color-surface);
}

.tools__tabs {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tools__tab-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    font-family: var(--font-family-base);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-secondary-text);
    background-color: transparent;
    border: 1px solid var(--color-surface);
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tools__tab-button:hover {
    background-color: var(--color-background);
    color: var(--color-primary-text);
}

.tools__tab-button.is-active {
    background-color: var(--color-accent);
    color: var(--color-background);
    border-color: var(--color-accent);
    font-weight: 600;
}

.tools__tab-icon {
    width: 20px;
    height: 20px;
}

.tools__pane {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    animation: fadeIn 0.5s ease;
}

.tools__pane.is-active {
    display: grid;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tool-card {
    background-color: var(--color-background);
    padding: 2rem;
    border-radius: 12px;
    text-align: left;
    display: flex;
    flex-direction: column;
}

.tool-card__icon {
    width: 32px;
    height: 32px;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.tool-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--color-primary-text);
}

.tool-card__text {
    font-size: 0.95rem;
    color: var(--color-secondary-text);
    line-height: 1.6;
}

/* --- Responsive for Tools --- */
@media (max-width: 992px) {
    .tools__pane {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tools__pane {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .tools__tabs {
        gap: 0.5rem;
    }
    .tools__tab-button {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }
}

/* =================================
   EXAMPLES SECTION
   ================================= */
.examples {
    background-color: var(--color-background);
}

.examples__wrapper {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.example-card {
    background-color: var(--color-surface);
    border-radius: 16px;
    padding: 2.5rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    border: 1px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.example-card:hover {
    border-color: rgba(34, 211, 238, 0.5);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.example-card__label {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    background-color: #ef4444; /* Red for problem */
    color: var(--color-primary-text);
    margin-bottom: 1rem;
}

.example-card__label--solution {
    background-color: #22c55e; /* Green for solution */
}

.example-card__title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.example-card__text {
    color: var(--color-secondary-text);
}

.example-card__arrow {
    color: var(--color-accent);
}

.example-card__arrow i {
    width: 40px;
    height: 40px;
}

/* --- Responsive for Examples --- */
@media (max-width: 768px) {
    .example-card {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 2rem;
        text-align: center;
    }

    .example-card__arrow {
        transform: rotate(90deg);
    }
}

/* =================================
   BLOG SECTION
   ================================= */
.blog {
    background-color: var(--color-surface);
}

.blog__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.blog-post {
    background-color: var(--color-background);
    border-radius: 16px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.blog-post:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.25);
}

.blog-post__link {
    display: block;
    color: inherit;
    text-decoration: none;
}

.blog-post__link:hover .blog-post__title {
    color: var(--color-accent);
}

.blog-post__image-wrapper {
    position: relative;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.blog-post__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.blog-post:hover .blog-post__image {
    transform: scale(1.05);
}

.blog-post__content {
    padding: 1.5rem;
}

.blog-post__date {
    display: block;
    font-size: 0.85rem;
    color: var(--color-secondary-text);
    margin-bottom: 0.75rem;
}

.blog-post__title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--color-primary-text);
    transition: color 0.3s ease;
    line-height: 1.4;
}

.blog-post__excerpt {
    font-size: 0.95rem;
    color: var(--color-secondary-text);
    line-height: 1.6;
}

.blog__cta {
    text-align: center;
    margin-top: 4rem;
}

/* --- Responsive for Blog --- */
@media (max-width: 992px) {
    .blog__grid {
        grid-template-columns: 1fr;
    }
}

/* =================================
   CONTACT SECTION
   ================================= */
.contact {
    background-color: var(--color-background);
}

.contact__wrapper {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    align-items: flex-start;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.form-label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-secondary-text);
}

.form-input {
    width: 100%;
    padding: 0.8rem 1rem;
    font-size: 1rem;
    font-family: var(--font-family-base);
    background-color: var(--color-surface);
    border: 1px solid #4B5563; /* Gray-600 */
    border-radius: 8px;
    color: var(--color-primary-text);
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.2);
}

.form-input.is-error {
    border-color: #ef4444; /* red-500 */
}

/* Checkbox styles */
.form-group--checkbox {
    flex-direction: row;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.9rem;
}

.form-checkbox {
    flex-shrink: 0;
    margin-top: 4px;
    appearance: none;
    width: 1.25em;
    height: 1.25em;
    border: 2px solid #4B5563;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.form-checkbox:checked {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    background-image: url("data:image/svg+xml,%3csvg viewBox='0 0 16 16' fill='white' xmlns='http://www.w3.org/2000/svg'%3e%3cpath d='M12.207 4.793a1 1 0 010 1.414l-5 5a1 1 0 01-1.414 0l-2-2a1 1 0 011.414-1.414L6.5 9.086l4.293-4.293a1 1 0 011.414 0z'/%3e%3c/svg%3e");
    background-size: 100% 100%;
    background-position: center;
    background-repeat: no-repeat;
}

.form-checkbox-label a {
    color: var(--color-accent);
    text-decoration: underline;
}
.form-checkbox-label a:hover {
    text-decoration: none;
}

.contact-form__button {
    width: 100%;
}

/* Success Message */
.success-message {
    display: none; /* Hidden by default */
    text-align: center;
    padding: 3rem 1rem;
    border: 1px solid var(--color-surface);
    border-radius: 12px;
}

.success-message__icon {
    color: #22c55e; /* green-500 */
    margin-bottom: 1rem;
}
.success-message__icon i {
    width: 50px;
    height: 50px;
}
.success-message__title {
    font-size: 1.75rem;
    margin-bottom: 0.5rem;
}

/* Info Column */
.contact-info {
    background-color: var(--color-surface);
    padding: 2rem;
    border-radius: 12px;
}

.contact-info__title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}
.contact-info__text {
    color: var(--color-secondary-text);
    margin-bottom: 2rem;
}
.contact-info__list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.contact-info__item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}
.contact-info__icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    color: var(--color-accent);
    margin-top: 2px;
}
.contact-info__item a, .contact-info__item span {
    color: var(--color-primary-text);
    line-height: 1.5;
}

/* --- Responsive for Contact --- */
@media (max-width: 992px) {
    .contact__wrapper {
        grid-template-columns: 1fr;
    }
}

/* =================================
   COOKIE POPUP
   ================================= */
.cookie-popup {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-surface);
    padding: 1.5rem;
    box-shadow: 0 -5px 20px rgba(0, 0, 0, 0.2);
    transform: translateY(120%);
    transition: transform 0.5s ease-in-out;
    z-index: 2000;
}

.cookie-popup.is-visible {
    transform: translateY(0);
}

.cookie-popup__content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}

.cookie-popup__text {
    color: var(--color-secondary-text);
}

.cookie-popup__link {
    color: var(--color-accent);
    text-decoration: underline;
}

.cookie-popup__button {
    flex-shrink: 0;
    padding: 0.6rem 1.5rem;
}

@media (max-width: 768px) {
    .cookie-popup__content {
        flex-direction: column;
        text-align: center;
    }
}

/* =================================
   STYLES FOR STATIC PAGES (PRIVACY, TERMS, ETC.)
   ================================= */
.pages {
    padding: calc(var(--header-height) + 4rem) 0 4rem;
}

.pages .container {
    max-width: 800px;
}

.pages h1 {
    font-size: 2.8rem;
    margin-bottom: 2rem;
}

.pages h2 {
    font-size: 2rem;
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--color-surface);
}

.pages p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-secondary-text);
    margin-bottom: 1.5rem;
}

.pages ul {
    list-style: disc;
    padding-left: 2rem;
    margin-bottom: 1.5rem;
}

.pages li {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-secondary-text);
    margin-bottom: 1rem;
}

.pages a {
    color: var(--color-accent);
    text-decoration: underline;
}

.pages a:hover {
    text-decoration: none;
}

.pages strong {
    color: var(--color-primary-text);
    font-weight: 600;
}