/* =========================
   CSS VARIABLES 
========================= */
:root {
    /* Core Colors */
    --c-black: #000;
    --c-white: #fff;
    --c-gray-900: #222;
    --c-gray-700: #333;
    --c-gray-500: #777;
    --c-gray-border: #ddd;
    --c-blue: #0669f7;
    --c-blue-hover: #0558d4;
    --c-blue-focus: rgba(6, 105, 247, 0.15);
    --c-yellow: #ffc72c;
    --c-bg-light: #f9fafb;
    --c-overlay: rgba(0, 0, 0, 0.5);

    /* Gradients */
    --g-blue-yellow: linear-gradient(90deg, #e3efff 50%, #fdf6e0);
    --g-yellow-blue: linear-gradient(90deg, #fdf6e0 50%, #e3efff);

    /* Typography Scale */
    --fs-hero: 66px;
    --fs-h2-lg: 42px;
    --fs-h2-md: 38px;
    --fs-feature: 34px;
    --fs-feature-sub: 22px;
    --fs-body-lg: 20px;
    --fs-body: 16px;
    --fs-body-sm: 15px;
    --fs-small: 14px;
    --fs-xs: 13px;
    --fs-tiny: 12px;

    /* Layout */
    --header-height: 64px;
    --container-width: 1140px;

    /* Spacing Scale */
    --space-xs: 10px;
    --space-sm: 16px;
    --space-md: 20px;
    --space-lg: 32px;
    --space-xl: 48px;
    --space-2xl: 80px;
    --space-3xl: 100px;
    --space-4xl: 140px;
    --space-5xl: 200px;
    --space-6xl: 240px;

    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    --radius-2xl: 24px;

    /* Shadows & Effects */
    --shadow-default: 0 20px 30px rgba(0, 0, 0, 0.18);
    --shadow-header: 0 4px 10px rgba(0, 0, 0, 0.08);
    --shadow-button: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Transitions */
    --trans-fast: 0.15s ease;
    --trans-default: 0.2s ease;
    --trans-slow: 0.3s ease;
    --trans-slower: 0.4s ease;
    --trans-slowest: 0.8s ease;

    /* Component Sizes */
    --image-width: 420px;
    --row-gap: 80px;
}

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

body {
    font-family: Arial, Helvetica, sans-serif;
    color: var(--c-gray-900);
    background-color: var(--c-white);
    line-height: 1.6;
}

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

/* =========================
   UTILITY CLASSES
========================= */
.reverse {
    flex-direction: row-reverse;
}

/* =========================
   HEADER / NAV
========================= */
header {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 999;
    width: 100%;
    height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 60px;
    background-color: transparent;
    box-shadow: none;
    transition:
        background-color var(--trans-slow),
        box-shadow var(--trans-slow);
}

header:hover,
header.scrolled {
    background-color: var(--c-white);
    box-shadow: var(--shadow-header);
}

/* Logo Styles */
.logo {
    position: relative;
    width: 60px;
    height: 26px;
    cursor: pointer;
}

.logo img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    transition: opacity var(--trans-default);
}

.logo-white {
    opacity: 1;
}

.logo-black {
    opacity: 0;
}

header:hover .logo-white,
header.scrolled .logo-white {
    opacity: 0;
}

header:hover .logo-black,
header.scrolled .logo-black {
    opacity: 1;
}

/* Navigation */
nav ul {
    display: flex;
    gap: 40px;
    list-style: none;
}

nav ul li {
    font-size: var(--fs-body-sm);
    font-weight: 500;
    color: var(--c-white);
    cursor: pointer;
    transition:
        color var(--trans-default),
        transform var(--trans-default);
}

nav ul li:hover {
    transform: translateY(-2px);
}

header:hover nav ul li,
header.scrolled nav ul li {
    color: var(--c-gray-900);
}

/* =========================
   MOBILE MENU
========================= */
.menu-toggle {
    display: none;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1000;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    margin: 5px 0;
    background: var(--c-white);
    transition: all var(--trans-slow);
}

header:hover .menu-toggle span,
header.scrolled .menu-toggle span {
    background: var(--c-black);
}

/* Menu Toast */
.menu-toast {
    position: fixed;
    top: var(--header-height);
    right: var(--space-md);
    z-index: 9999;
    min-width: 160px;
    padding: var(--space-sm);
    background: rgba(34, 34, 34, 0.95);
    backdrop-filter: blur(10px);
    color: var(--c-white);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-button);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition:
        opacity var(--trans-default),
        visibility var(--trans-default),
        transform var(--trans-default);
}

.menu-toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.menu-toast-list {
    padding: 0;
    margin: 0;
    list-style: none;
}

.menu-toast-list li {
    padding: 12px var(--space-sm);
    font-size: var(--fs-body-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    white-space: nowrap;
    transition: background var(--trans-default);
}

.menu-toast-list li:hover {
    background: rgba(255, 255, 255, 0.1);
}

.menu-toast-overlay {
    position: fixed;
    inset: 0;
    z-index: 9998;
    opacity: 0;
    visibility: hidden;
    transition:
        opacity var(--trans-default),
        visibility var(--trans-default);
}

.menu-toast-overlay.show {
    opacity: 1;
    visibility: visible;
}

/* =========================
   HERO SECTIONS
========================= */
.primaryHero {
    position: relative;
    height: 100vh;
    padding-top: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: url('./assets/hero1.png') center / cover no-repeat;
}

.primaryHero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--c-overlay);
}

.primaryHero > * {
    position: relative;
    z-index: 1;
    padding: 0 40px;
}

.primaryHero h1 {
    margin-bottom: var(--space-md);
    font-size: var(--fs-hero);
    font-weight: 700;
    color: var(--c-white);
}

.primaryHero p {
    font-size: var(--fs-body-lg);
    color: var(--c-white);
    opacity: 0.95;
}

/* Highlight Effect */
.highlight {
    position: relative;
    font-weight: 700;
}

.highlight::after {
    content: '';
    position: absolute;
    left: -6px;
    right: -6px;
    bottom: 4px;
    z-index: -1;
    height: 0.6em;
    background-color: var(--c-blue);
}

@keyframes bounce {
    0%,
    100% {
        transform: translate(-50%, 0);
    }
    50% {
        transform: translate(-50%, -10px);
    }
}

.secondaryHero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    background: url('./assets/hero2.jpg') center / cover no-repeat;
}

.secondaryHero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to right, rgba(0, 0, 0, 0.5) 0%, rgba(0, 0, 0, 0.3) 50%, rgba(0, 0, 0, 0) 100%);
}

.secondaryHero > * {
    position: relative;
    z-index: 1;
    padding: 0 40px;
}

.secondaryHeroText {
    max-width: 1120px;
}

.secondaryHero p {
    margin-bottom: var(--space-xl);
    font-size: var(--fs-feature-sub);
    color: var(--c-white);
}

.secondaryHero strong {
    font-size: var(--fs-h2-md);
}

.secondaryHero ul {
    list-style: square inside;
    color: var(--c-white);
}

/* Arrow Animation */
.arrow-down {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    cursor: pointer;
    animation: bounce 1.6s infinite;
}

/* =========================
   SECTION INTROS
========================= */
.job-intro-section,
.worker-intro-section {
    padding: var(--space-5xl) 40px;
    text-align: center;
}

.job-intro-section {
    background: var(--g-blue-yellow);
}

.worker-intro-section {
    background: var(--g-yellow-blue);
}

.job-intro-section h2,
.worker-intro-section h2 {
    margin-bottom: var(--space-md);
    font-size: var(--fs-h2-md);
    font-weight: 700;
}

.job-intro-section p,
.worker-intro-section p {
    font-size: var(--fs-body-lg);
    font-weight: 500;
}

/* =========================
   CONTENT SECTIONS
========================= */
.job-section,
.worker-section {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--space-6xl) 40px 160px;
}

.job-section h2 {
    margin-bottom: var(--space-3xl);
    font-size: var(--fs-h2-lg);
    color: var(--c-blue);
}

.worker-section h2 {
    margin-bottom: var(--space-3xl);
    font-size: var(--fs-h2-lg);
    color: var(--c-yellow);
}

.worker-container {
    background-color: var(--c-bg-light);
}

/* Content Rows */
.job-row,
.worker-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--row-gap);
    margin-bottom: var(--space-4xl);
}

.job-text,
.worker-text {
    width: 55%;
}

.job-text p,
.worker-text p {
    margin-bottom: var(--space-md);
    font-size: var(--fs-feature);
    font-weight: 700;
    line-height: 1.3;
}

.job-text span,
.worker-text span {
    display: block;
    font-size: var(--fs-feature-sub);
    font-weight: 400;
    color: var(--c-gray-500);
}

.job-image,
.worker-image {
    width: var(--image-width);
}

.job-image img {
    width: 100%;
}

.worker-image img {
    width: 100%;
    border-radius: var(--radius-lg);
}

/* =========================
   BUTTONS
========================= */
.app-download-btn-container {
    display: flex;
    gap: 5px;
    align-items: center;
}

.app-download-btn {
    display: flex;
    align-items: center;
    margin-top: 28px;
    height: 60px;
    aspect-ratio: 3 / 1;
}

.app-download-btn img {
    width: auto;
    height: 100%;
}

/* =========================
   CONTACT INTRO
========================= */
.contact-intro {
    height: 50vh;
}

.contact-intro-image {
    position: relative;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    background: url(https://image.1gada.com/main/partner-bg.jpeg) center / cover no-repeat fixed;
}

.contact-intro-image::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--c-overlay);
    backdrop-filter: blur(5px);
}

.contact-intro-image h2,
.contact-intro-image p {
    position: relative;
    z-index: 1;
    padding: 0 50px;
    color: var(--c-white);
    text-align: center;
}

.contact-intro-image h2 {
    font-size: var(--fs-h2-md);
    font-weight: 700;
}

.contact-intro-image p {
    font-size: var(--fs-body-lg);
}

/* =========================
   CONTACT FORM
========================= */
.contact-section {
    padding: var(--space-5xl) 50px;
    background-color: var(--c-blue);
    background-image: url('./assets/background.svg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.contact-container {
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space-2xl);
    background-color: var(--c-white);
    box-shadow: var(--shadow-default);
    border-radius: var(--radius-2xl);
}

.contact-container h2 {
    margin-bottom: 12px;
    font-size: var(--fs-h2-md);
    font-weight: 700;
}

.contact-container p {
    margin-bottom: var(--space-xl);
    font-size: var(--fs-body-lg);
    color: var(--c-gray-700);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

/* Form Groups */
.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    width: 100%;
}

.form-group label {
    width: 100%;
    font-size: var(--fs-small);
    font-weight: 600;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px var(--space-sm);
    font-size: var(--fs-body);
    border: 1px solid var(--c-gray-border);
    border-radius: var(--radius-md);
    resize: none;
    transition:
        border-color var(--trans-default),
        box-shadow var(--trans-default);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--c-blue);
    box-shadow: 0 0 0 3px var(--c-blue-focus);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #ef4444;
}

.form-group input.error:focus,
.form-group textarea.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    font-size: var(--fs-body-sm);
    gap: var(--space-xs);
}

.error-message {
    display: none;
    font-size: var(--fs-xs);
    color: #ef4444;
}

.error-message.show {
    display: block;
}

/* Submit Button */
.contact-submit-btn {
    margin-top: var(--space-md);
    padding: 18px;
    font-size: 18px;
    font-weight: 700;
    color: var(--c-white);
    background-color: var(--c-blue);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition:
        transform var(--trans-fast),
        background-color var(--trans-default);
}

.contact-submit-btn:hover {
    background-color: var(--c-blue-hover);
    transform: translateY(-2px);
}

/* =========================
   FOOTER
========================= */
footer {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    padding: 36px 60px;
    border-top: 1px solid #eee;
}

footer p,
footer a {
    font-size: var(--fs-tiny);
    color: var(--c-gray-500);
    line-height: 1.7;
}

footer a {
    display: block;
    text-decoration: underline;
}

.footer-image {
    height: var(--space-md);
}

.footer-image a,
.footer-image img {
    height: 100%;
    width: 100%;
    object-fit: contain;
}

/* =========================
   SCROLL TOP BUTTON
========================= */
.scroll-top-btn {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 1000;
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--c-black);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition:
        opacity var(--trans-slow),
        transform var(--trans-slow);
}

.scroll-top-btn.show {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.scroll-top-btn:hover {
    background-color: var(--c-gray-900);
}

/* =========================
   TOASTS
========================= */
.submit-toast {
    position: fixed;
    top: 0;
    left: 50%;
    z-index: 9999;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-size: var(--fs-body);
    font-weight: 500;
    color: var(--c-white);
    background: var(--c-gray-900);
    border-radius: var(--radius-lg);
    opacity: 0;
    transform: translate(-50%, -100%);
    transition:
        transform var(--trans-slower),
        opacity var(--trans-slower);
}

.submit-toast.show {
    opacity: 1;
    transform: translate(-50%, 20%);
}

/* =========================
   SCROLL ANIMATIONS
========================= */
.animate-fade {
    opacity: 0;
    transition: opacity var(--trans-slowest);
}

.animate-up {
    opacity: 0;
    transform: translateY(40px);
    transition:
        opacity var(--trans-slowest),
        transform var(--trans-slowest);
}

.animate-fade.is-visible {
    opacity: 1;
}

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

/* =========================
   TABLET (768px ~ 1024px)
========================= */
@media screen and (max-width: 1024px) {
    :root {
        --fs-hero: 52px;
        --fs-h2-lg: 36px;
        --fs-h2-md: 32px;
        --fs-feature: 36px;
        --fs-feature-sub: 18px;
        --image-width: 360px;
        --row-gap: 60px;
        --space-3xl: 80px;
        --space-4xl: 100px;
        --space-5xl: 150px;
        --space-6xl: 180px;
    }

    header {
        padding: 0 40px;
    }

    nav ul {
        gap: 28px;
    }

    nav ul li {
        font-size: var(--fs-small);
    }

    .secondaryHero ul {
        font-size: 14px;
    }

    .job-section,
    .worker-section {
        padding: var(--space-6xl) 40px 120px;
    }

    .app-download-btn {
        height: 50px;
    }

    .contact-intro {
        height: 40vh;
    }

    .contact-section {
        padding: var(--space-5xl) 40px;
    }

    .contact-container {
        padding: 60px;
    }

    footer {
        padding: var(--space-lg) 40px;
    }
}

/* =========================
   MOBILE (~ 767px)
========================= */
@media screen and (max-width: 767px) {
    :root {
        --fs-hero: 36px;
        --fs-h2-lg: 28px;
        --fs-h2-md: 26px;
        --fs-feature: 28px;
        --fs-feature-sub: 16px;
        --header-height: 56px;
        --space-md: 16px;
        --space-lg: 24px;
        --space-xl: 32px;
        --space-3xl: 60px;
        --space-4xl: 80px;
        --space-5xl: 100px;
        --space-6xl: 100px;
        --image-width: 300px;
        --row-gap: 20px;
    }

    header {
        padding: 0 var(--space-md);
    }

    .logo {
        width: 40px;
        height: 18px;
    }

    nav {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .hero h1,
    .hero p {
        padding: 0 var(--space-md);
    }

    .hero p {
        font-size: var(--fs-body-sm);
    }

    .secondaryHero ul {
        font-size: 12px;
    }

    .arrow-down {
        bottom: 24px;
    }

    .arrow-down svg {
        width: 40px;
        height: 40px;
    }

    .job-intro-section,
    .worker-intro-section {
        padding: var(--space-5xl) var(--space-md);
    }

    .job-intro-section h2,
    .worker-intro-section h2 {
        margin-bottom: var(--space-sm);
    }

    .job-intro-section p,
    .worker-intro-section p {
        font-size: var(--fs-body);
    }

    .job-section,
    .worker-section {
        padding: var(--space-5xl) var(--space-lg) var(--space-2xl);
    }

    .job-section h2,
    .worker-section h2 {
        margin-bottom: var(--space-3xl);
        font-size: 24px;
    }

    .job-row,
    .worker-row {
        flex-direction: column;
    }

    .job-text p,
    .worker-text p {
        text-align: center;
    }

    .app-download-btn-container {
        justify-content: center;
    }

    .app-download-btn {
        height: 40px;
    }

    .contact-intro {
        height: 35vh;
        min-height: 280px;
    }

    .contact-intro-image h2,
    .contact-intro-image p {
        padding: 0 var(--space-md);
    }

    .contact-intro-image p {
        font-size: var(--fs-body);
    }

    .contact-section {
        padding: var(--space-2xl) var(--space-xl);
    }

    .contact-container {
        padding: 40px 24px;
        border-radius: var(--radius-xl);
    }

    .contact-container h2 {
        margin-bottom: var(--space-xs);
        font-size: 24px;
    }

    .contact-container p {
        margin-bottom: var(--space-lg);
        font-size: var(--fs-body-sm);
    }

    .form-group label {
        font-size: var(--fs-xs);
    }

    .form-group input,
    .form-group textarea {
        padding: 12px 14px;
        font-size: var(--fs-body-sm);
    }

    .contact-submit-btn {
        margin-top: 12px;
        padding: var(--space-sm);
        font-size: var(--fs-body);
    }

    footer {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
        padding: 28px var(--space-md);
    }

    footer p,
    footer a {
        font-size: 11px;
        text-align: left;
    }

    .footer-image {
        align-self: flex-start;
    }

    .scroll-top-btn {
        right: var(--space-sm);
        bottom: var(--space-sm);
        width: 48px;
        height: 48px;
    }

    .scroll-top-btn svg {
        width: 18px;
        height: 11px;
    }

    .submit-toast {
        padding: 14px 24px;
        font-size: var(--fs-small);
        border-radius: 12px;
    }

    .submit-toast.show {
        transform: translate(-50%, 30%);
    }
}

/* =========================
   SMALL MOBILE (~ 480px)
========================= */
@media screen and (max-width: 480px) {
    :root {
        --fs-hero: 30px;
        --fs-h2-md: 22px;
        --fs-feature: 24px;
        --fs-feature-sub: 15px;
    }

    nav ul {
        gap: var(--space-sm);
    }

    nav ul li {
        font-size: var(--fs-tiny);
    }

    .contact-container {
        padding: var(--space-lg) var(--space-md);
    }

    .contact-container h2 {
        font-size: 22px;
    }

    .contact-container p {
        font-size: var(--fs-small);
    }

    .checkbox-group {
        font-size: var(--fs-small);
    }
}