/* ===================================================================
   TABLE OF CONTENTS
   -------------------------------------------------------------------
   01. CSS Variables & Root Styles
   02. Base & Typography
   03. Utility Classes
   04. Buttons & Links
   05. Header & Navigation
   06. Footer
   07. Animations & Transitions
   08. Hero Section
   09. Services Section
   10. About Us Section
   11. Sample Report Section
   12. Calculator Section
   13. Industries Section
   14. Testimonials Section
   15. CTA Section
   16. Contact Page Specific Styles
   17. Legal Page Specific Styles
   18. Media Queries (Responsiveness)
=================================================================== */

/* ===================================================================
   01. CSS Variables & Root Styles
=================================================================== */
:root {
    --color-bg-dark: #0a192f;
    --color-bg-light: #112240;
    --color-primary-text: #ccd6f6;
    --color-secondary-text: #8892b0;
    --color-heading-text: #ffffff;
    --color-accent: #ffd664;
    --color-accent-hover: #d3bb52;
    --color-border: #233554;
    --color-shadow: rgba(2, 12, 27, 0.7);

    --font-family-base: 'Poppins', sans-serif;

    --header-height: 80px;
    --border-radius: 4px;
    --transition-speed: 0.3s ease;
    --container-width: 1100px;
}

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

html {
    scroll-behavior: smooth;
}

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

/* ===================================================================
   02. Base & Typography
=================================================================== */
h1,
h2,
h3,
h4 {
    color: var(--color-heading-text);
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
    font-size: clamp(1.25rem, 3vw, 1.5rem);
}

p {
    margin-bottom: 1rem;
    color: var(--color-secondary-text);
    max-width: 65ch;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

ul {
    list-style: none;
}

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

.section {
    padding: 100px 0;
}

/* ===================================================================
   03. Utility Classes
=================================================================== */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 20px;
}

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    color: var(--color-accent);
    margin-bottom: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
}

.section-title {
    margin-bottom: 15px;
}

.section-subtitle {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================================================
   04. Buttons & Links
=================================================================== */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 1rem;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    border: 2px solid transparent;
}

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

.btn--primary:hover {
    background-color: transparent;
    color: var(--color-accent);
}

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

.btn--secondary:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

.btn--large {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn--full {
    width: 100%;
}


/* ===================================================================
   05. Header & Navigation
=================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    z-index: 1000;
    background-color: var(--color-bg-dark);
    transition: all var(--transition-speed);
}

.header.scrolled {
    background-color: var(--color-bg-light);
    box-shadow: 0 2px 20px var(--color-shadow);
    height: 70px;
}

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

.header__logo img {
    height: 40px;
    filter: brightness(0) invert(1);
    transition: height var(--transition-speed);
}

.header__nav {
    display: block;
}

.header__nav-list {
    display: flex;
    gap: 30px;
}

.header__nav-link {
    color: var(--color-primary-text);
    font-weight: 500;
    position: relative;
    padding: 5px 0;
}

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

.header__nav-link:hover::after,
.header__nav-link.active::after {
    width: 100%;
}

.header__nav-link:hover,
.header__nav-link.active {
    color: var(--color-accent);
}

.header__cta {
    font-size: 0.9rem;
    padding: 10px 20px;
}

.header__menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
}

.header__menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-accent);
    margin: 5px 0;
    transition: all 0.4s ease;
}

/* ===================================================================
   06. Footer
=================================================================== */
.footer {
    background-color: var(--color-bg-light);
    padding: 80px 0 30px;
    border-top: 1px solid var(--color-border);
}

.footer__container {
    display: flex;
    flex-direction: column;
}

.footer__main {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 50px;
}

.footer__logo img {
    height: 40px;
    filter: brightness(0) invert(1);
    margin-bottom: 20px;
}

.footer__description {
    color: var(--color-secondary-text);
    font-size: 0.9rem;
}

.footer__title {
    color: var(--color-heading-text);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.footer__links ul li {
    margin-bottom: 10px;
}

.footer__links a {
    color: var(--color-secondary-text);
    font-size: 0.9rem;
}

.footer__links a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

.footer__contact p {
    font-size: 0.9rem;
    color: var(--color-secondary-text);
    margin-bottom: 10px;
}

.footer__contact a {
    color: var(--color-secondary-text);
}

.footer__bottom {
    border-top: 1px solid var(--color-border);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--color-secondary-text);
}

.footer__socials {
    display: flex;
    gap: 20px;
}

.footer__socials a svg {
    width: 20px;
    height: 20px;
    fill: var(--color-secondary-text);
    transition: all var(--transition-speed);
}

.footer__socials a:hover svg {
    fill: var(--color-accent);
    transform: translateY(-3px);
}

/* ===================================================================
   07. Animations & Transitions
=================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal--delay-1 {
    transition-delay: 0.1s;
}

.reveal--delay-2 {
    transition-delay: 0.2s;
}

.reveal--delay-3 {
    transition-delay: 0.3s;
}

.reveal--delay-4 {
    transition-delay: 0.4s;
}

.reveal--delay-5 {
    transition-delay: 0.5s;
}

/* ===================================================================
   08. Hero Section
=================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    position: relative;
    overflow: hidden;
}

.hero__container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 50px;
}

.hero__title {
    margin-bottom: 20px;
}

.hero__subtitle {
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 50ch;
}

.hero__buttons {
    display: flex;
    gap: 20px;
}

.hero__image-container {
    position: relative;
}

.hero__image {
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px var(--color-shadow);
}

.hero__background-shape {
    position: absolute;
    top: -10%;
    right: -15%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(100, 255, 218, 0.1) 0%, rgba(100, 255, 218, 0) 70%);
    border-radius: 50%;
    z-index: -1;
}

/* ===================================================================
   09. Services Section
=================================================================== */
.services__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.service-card {
    background-color: var(--color-bg-light);
    padding: 40px 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition-speed);
}

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

.service-card__icon {
    color: var(--color-accent);
    margin-bottom: 20px;
}

.service-card__icon svg {
    width: 40px;
    height: 40px;
}

.service-card__title {
    margin-bottom: 15px;
}

.service-card__description {
    font-size: 0.95rem;
    margin-bottom: 20px;
}

.service-card__link {
    font-weight: 600;
    font-size: 0.9rem;
}

/* ===================================================================
   10. About Us Section
=================================================================== */
.about-us {
    background-color: var(--color-bg-light);
}

.about-us__container {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 60px;
    align-items: center;
}

.about-us__image-container {
    position: relative;
}

.about-us__image {
    border-radius: var(--border-radius);
}

.about-us__content .section-header {
    text-align: left;
}

.about-us__content .section-title,
.about-us__content .section-subtitle {
    margin-left: 0;
    margin-right: 0;
}

.about-us__list {
    margin: 30px 0;
}

.about-us__list-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    margin-bottom: 20px;
}

.about-us__list-icon {
    color: var(--color-accent);
    font-size: 1.2rem;
    font-weight: bold;
}

.about-us__list-item h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.about-us__list-item p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ===================================================================
   11. Sample Report Section
=================================================================== */
.sample-report {
    background-color: var(--color-bg-dark);
}

.sample-report__dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.report-card {
    background-color: var(--color-bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
}

.report-card__title {
    font-size: 1rem;
    color: var(--color-secondary-text);
    margin-bottom: 10px;
    font-weight: 500;
}

.report-card__value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-heading-text);
    margin-bottom: 5px;
}

.report-card__change {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.report-card__change--positive {
    color: #64ffda;
}

.report-card__change--negative {
    color: #ff7b72;
}

.report-card__chart {
    height: 80px;
    display: flex;
    align-items: flex-end;
    gap: 5px;
    border-top: 1px solid var(--color-border);
    padding-top: 15px;
}

.report-card__chart .bar {
    flex-grow: 1;
    background-color: var(--color-accent);
    opacity: 0.5;
    border-radius: 2px 2px 0 0;
    transition: all var(--transition-speed);
}

.report-card:hover .bar {
    opacity: 1;
}

/* ===================================================================
   12. Calculator Section
=================================================================== */
.calculator-section {
    background-color: var(--color-bg-light);
}

.calculator-section__container {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: center;
}

.calculator-section__content .section-header {
    text-align: left;
    margin-bottom: 30px;
}

.calculator-section__content .section-title,
.calculator-section__content .section-subtitle {
    margin-left: 0;
}

.calculator-form .form-group {
    margin-bottom: 20px;
}

.calculator-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--color-primary-text);
}

.calculator-form select,
.calculator-form input[type="range"] {
    width: 100%;
    padding: 10px;
    background-color: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    color: var(--color-primary-text);
    font-size: 1rem;
}

.calculator-form input[type="range"] {
    padding: 0;
}

#ad-spend-value {
    display: inline-block;
    margin-top: 5px;
    font-weight: 600;
    color: var(--color-accent);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.checkbox-group label {
    margin-bottom: 0;
}

.result-card {
    background-color: var(--color-bg-dark);
    padding: 40px;
    text-align: center;
    border-radius: var(--border-radius);
    border: 2px solid var(--color-accent);
}

.result-card p {
    color: var(--color-secondary-text);
}

#total-estimate {
    font-size: 3rem;
    color: var(--color-accent);
    margin: 10px 0;
}

.result-card__disclaimer {
    font-size: 0.8rem;
    margin-bottom: 20px;
}

/* ===================================================================
   13. Industries Section
=================================================================== */
.industries__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    text-align: center;
}

.industry-item {
    background-color: var(--color-bg-light);
    padding: 30px 20px;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-border);
    transition: all var(--transition-speed);
}

.industry-item:hover {
    transform: scale(1.05);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.industry-item span {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 15px;
}

.industry-item p {
    font-weight: 600;
    color: var(--color-heading-text);
    margin-bottom: 0;
}

/* ===================================================================
   14. Testimonials Section
=================================================================== */
.testimonials {
    background-color: var(--color-bg-light);
}

.testimonial-slider-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    overflow: hidden;
}

.testimonial-slider {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.testimonial-card {
    min-width: 100%;
    opacity: 0;
    transition: opacity 0.5s ease-in-out;
    padding: 0 40px;
}

.testimonial-card.active {
    opacity: 1;
}

.testimonial-card__text {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--color-primary-text);
    margin-bottom: 30px;
    text-align: center;
    position: relative;
}

.testimonial-card__text::before {
    content: '“';
    position: absolute;
    top: -20px;
    left: -20px;
    font-size: 4rem;
    color: var(--color-accent);
    opacity: 0.2;
}

.testimonial-card__author {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
}

.testimonial-card__author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid var(--color-accent);
}

.testimonial-card__name {
    margin-bottom: 0;
    font-size: 1rem;
}

.testimonial-card__title {
    margin-bottom: 0;
    font-size: 0.9rem;
}

.testimonial-slider__controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
}

.slider-btn {
    background-color: var(--color-bg-dark);
    border: 1px solid var(--color-border);
    color: var(--color-accent);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    transition: all var(--transition-speed);
}

.slider-btn:hover {
    background-color: var(--color-accent);
    color: var(--color-bg-dark);
}

/* ===================================================================
   15. CTA Section
=================================================================== */
.cta {
    background-color: var(--color-bg-dark);
}

.cta__container {
    background-color: var(--color-bg-light);
    border-radius: var(--border-radius);
    padding: 60px;
    text-align: center;
    border: 1px solid var(--color-border);
}

.cta__title {
    margin-bottom: 20px;
}

.cta__text {
    max-width: 60ch;
    margin: 0 auto 30px;
}

/* ===================================================================
   16. Contact Page Specific Styles
=================================================================== */
.contact-page {
    padding-top: calc(var(--header-height) + 60px);
}

.contact-page__layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
    margin-top: 40px;
}

.contact-form {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.form-group {
    width: 100%;
}

.form-group--half {
    width: calc(50% - 10px);
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    background-color: var(--color-bg-light);
    border: 1px solid var(--color-border);
    color: var(--color-primary-text);
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-family: var(--font-family-base);
    transition: border-color var(--transition-speed);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.contact-info-card {
    background-color: var(--color-bg-light);
    padding: 30px;
    border-radius: var(--border-radius);
    height: 100%;
}

.contact-info-card h3 {
    margin-bottom: 20px;
}

.contact-info-card ul {
    list-style: none;
}

.contact-info-card li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    margin-bottom: 20px;
}

.contact-info-card li span {
    color: var(--color-accent);
    font-size: 1.5rem;
    margin-top: 5px;
}

.contact-info-card p {
    margin-bottom: 0;
}

.contact-info-card a {
    word-break: break-all;
}

/* ===================================================================
   17. Legal Page Specific Styles
=================================================================== */
.legal-page {
    padding-top: calc(var(--header-height) + 60px);
}

.legal-page__title {
    text-align: center;
    margin-bottom: 40px;
}

.legal-page__content h2 {
    margin-top: 40px;
    margin-bottom: 15px;
    font-size: 1.5rem;
    color: var(--color-accent);
    padding-bottom: 5px;
    border-bottom: 1px solid var(--color-border);
}

.legal-page__content p {
    margin-bottom: 15px;
}

.legal-page__content ul {
    list-style: disc;
    padding-left: 20px;
}

.legal-page__content li {
    margin-bottom: 10px;
}

/* ===================================================================
   18. Media Queries (Responsiveness)
=================================================================== */

/* Tablets and small desktops */
@media (max-width: 992px) {
    .header__nav {
        display: none;
        position: fixed;
        top: 0;
        right: -100%;
        width: 60%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-bg-light);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: right 0.4s ease-in-out;
        box-shadow: -5px 0 15px var(--color-shadow);
    }

    .header__nav.active {
        display: flex;
        right: 0;
    }

    .header__nav-list {
        flex-direction: column;
        text-align: center;
        gap: 40px;
    }

    .header__nav-link {
        font-size: 1.2rem;
    }

    .header__cta {
        display: none;
    }

    .header__menu-toggle {
        display: block;
    }

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

    .header__menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .header__menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .hero__container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__content {
        order: 2;
    }

    .hero__image-container {
        order: 1;
        margin-bottom: 40px;
    }

    .hero__subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero__buttons {
        justify-content: center;
    }

    .about-us__container {
        grid-template-columns: 1fr;
    }

    .about-us__content .section-header {
        text-align: center;
    }

    .about-us__content .section-subtitle {
        margin: 0 auto 15px;
    }

    .calculator-section__container {
        grid-template-columns: 1fr;
    }

    .calculator-section__content .section-header {
        text-align: center;
    }

    .calculator-section__content .section-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .result-card {
        margin-top: 30px;
    }

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

    .footer__about {
        grid-column: 1 / -1;
    }

    .contact-page__layout {
        grid-template-columns: 1fr;
    }
}

/* Mobile devices */
@media (max-width: 768px) {
    .section {
        padding: 80px 0;
    }

    .hero {
        min-height: auto;
        padding-top: 100px;
        padding-bottom: 60px;
    }

    .footer__main {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer__logo {
        margin-left: auto;
        margin-right: auto;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 20px;
    }

    .form-group--half {
        width: 100%;
    }
}