:root {
    --color-primary: #2563EB;
    --color-primary-dark: #1D4ED8;
    --color-primary-light: #DBEAFE;
    --color-background: #FFFFFF;
    --color-surface: #F8FAFC;
    --color-surface-muted: #F1F5F9;
    --color-text: #1F2937;
    --color-text-muted: #64748B;
    --color-border: #E2E8F0;
    --color-success: #16A34A;
    --color-danger: #DC2626;

    --font-family: "Inter", Arial, sans-serif;

    --space-1: 0.5rem;
    --space-2: 1rem;
    --space-3: 1.5rem;
    --space-4: 2rem;
    --space-5: 3rem;
    --space-6: 4rem;

    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06);
    --shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);

    --container-width: 1120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-width: 320px;
    background: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-family);
    line-height: 1.5;
}

a {
    color: inherit;
}

button,
input {
    font: inherit;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 3px solid var(--color-primary-light);
    outline-offset: 3px;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1,
h2,
h3 {
    line-height: 1.2;
}

h1 {
    margin-bottom: var(--space-2);
    font-size: clamp(2rem, 8vw, 3.5rem);
}

h2 {
    margin-bottom: var(--space-2);
    font-size: clamp(1.5rem, 4vw, 2rem);
}

h3 {
    margin-bottom: var(--space-1);
    font-size: 1.125rem;
}

p {
    color: var(--color-text-muted);
}

.container {
    width: min(100% - 2rem, var(--container-width));
    margin-inline: auto;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    min-height: 72px;
    padding: var(--space-2) 1rem;
    border-bottom: 1px solid var(--color-border);
    background: var(--color-background);
}

.brand {
    color: var(--color-primary);
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
}

.main-nav {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-link {
    padding: 0.5rem 0.625rem;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
}

.nav-link:hover,
.nav-link-active {
    color: var(--color-primary);
    background: var(--color-primary-light);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.75rem 1.25rem;
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.button:hover {
    transform: translateY(-1px);
}

.button-primary {
    background: var(--color-primary);
    color: #FFFFFF;
}

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

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

.button-outline:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.button-small {
    min-height: 38px;
    padding: 0.5rem 0.875rem;
    font-size: 0.875rem;
}

.button-full {
    width: 100%;
}

.eyebrow {
    display: inline-block;
    margin-bottom: 0.5rem;
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.text-link,
.back-link {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: none;
}

.text-link:hover,
.back-link:hover {
    text-decoration: underline;
}

/* Form */
.form {
    display: grid;
    gap: var(--space-2);
}

.form-group {
    display: grid;
    gap: 0.5rem;
}

.form-group label {
    font-weight: 700;
}

.input {
    width: 100%;
    min-height: 48px;
    padding: 0.75rem 0.875rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background);
    color: var(--color-text);
}

.input::placeholder {
    color: #94A3B8;
}

.input:focus {
    border-color: var(--color-primary);
}

/* Login */
.auth-page {
    display: flex;
    min-height: 100vh;
    flex-direction: column;
    background: var(--color-surface);
}

.auth-main {
    display: grid;
    flex: 1;
    place-items: center;
    padding: var(--space-4) 1rem;
}

.auth-card {
    width: min(100%, 460px);
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    background: var(--color-background);
    box-shadow: var(--shadow-md);
}

.auth-heading {
    margin-bottom: var(--space-3);
}

.auth-heading p {
    margin-bottom: 0;
}

.auth-footer-text {
    margin: var(--space-2) 0 0;
    text-align: center;
    font-size: 0.9rem;
}

.auth-footer-text a {
    color: var(--color-primary);
    font-weight: 700;
}

/* Dashboard */
.hero-section {
    padding: var(--space-5) 0;
    background: linear-gradient(135deg, var(--color-primary-light), #FFFFFF);
}

.hero-content {
    display: grid;
    gap: var(--space-3);
}

.hero-content > div:first-child {
    max-width: 700px;
}

.hero-content p {
    margin-bottom: 0;
    font-size: 1.05rem;
}

.search-form {
    display: grid;
    gap: 0.75rem;
    align-self: end;
}

.section {
    padding: var(--space-5) 0;
}

.section-muted {
    background: var(--color-surface);
}

.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.section-heading h2 {
    margin-bottom: 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-2);
}

.category-card {
    display: flex;
    min-height: 150px;
    flex-direction: column;
    justify-content: center;
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.category-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.category-icon {
    margin-bottom: 0.75rem;
    font-size: 2rem;
}

.category-title {
    font-weight: 800;
}

.category-text {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.professional-grid {
    display: grid;
    gap: var(--space-2);
}

.professional-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
    box-shadow: var(--shadow-sm);
}

.professional-avatar,
.profile-avatar {
    display: grid;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 50%;
    background: var(--color-primary-light);
    color: var(--color-primary);
    font-weight: 800;
}

.professional-avatar {
    width: 64px;
    height: 64px;
    font-size: 1.125rem;
}

.professional-content {
    display: flex;
    flex-direction: column;
}

.professional-content p {
    margin-bottom: var(--space-2);
}

.tag {
    display: inline-flex;
    width: fit-content;
    margin-bottom: 0.5rem;
    padding: 0.25rem 0.625rem;
    border-radius: 999px;
    background: var(--color-primary-light);
    color: var(--color-primary-dark);
    font-size: 0.75rem;
    font-weight: 800;
}

.rating {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    margin-bottom: var(--space-2);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.rating > span:first-child {
    color: #B45309;
    letter-spacing: 0.08em;
}

.rating strong {
    color: var(--color-text);
}

/* Profile */
.profile-hero {
    padding: var(--space-4) 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.back-link {
    display: inline-block;
    margin-bottom: var(--space-3);
}

.profile-summary {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.profile-avatar {
    width: 88px;
    height: 88px;
    font-size: 1.5rem;
}

.profile-info h1 {
    margin-bottom: 0.5rem;
    font-size: clamp(2rem, 7vw, 3rem);
}

.rating-large {
    margin-bottom: 0;
}

.profile-layout {
    display: grid;
    gap: var(--space-3);
    padding-top: var(--space-4);
    padding-bottom: var(--space-5);
}

.profile-main {
    display: grid;
    gap: var(--space-3);
}

.content-card,
.request-card {
    padding: var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: var(--color-background);
    box-shadow: var(--shadow-sm);
}

.content-card p:last-child,
.request-card p:last-child {
    margin-bottom: 0;
}

.service-list {
    display: grid;
    gap: 0.75rem;
    padding: 0;
    margin: var(--space-2) 0 0;
    list-style: none;
}

.service-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.service-icon {
    display: grid;
    width: 28px;
    height: 28px;
    flex: 0 0 auto;
    place-items: center;
    border-radius: 50%;
    background: #DCFCE7;
    color: var(--color-success);
    font-weight: 800;
}

.review-list {
    display: grid;
    gap: var(--space-2);
}

.review {
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

.review:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.review-top {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    margin-bottom: 0.5rem;
}

.review p {
    margin-bottom: 0;
}

.request-card {
    align-self: start;
}

.request-card h2 {
    margin-bottom: 0.75rem;
}

/* Footer */
.site-footer {
    padding: var(--space-2) 1rem;
    border-top: 1px solid var(--color-border);
    background: var(--color-background);
    text-align: center;
}

.site-footer p {
    margin: 0;
    font-size: 0.8rem;
}

/* Tablet */
@media (min-width: 48rem) {
    .site-header {
        padding-inline: 2rem;
    }

    .container {
        width: min(100% - 4rem, var(--container-width));
    }

    .auth-card {
        padding: var(--space-4);
    }

    .hero-section {
        padding: var(--space-6) 0;
    }

    .hero-content {
        grid-template-columns: 1.2fr 0.8fr;
        align-items: center;
    }

    .search-form {
        grid-template-columns: 1fr auto;
    }

    .category-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .professional-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .professional-card {
        flex-direction: row;
        align-items: flex-start;
    }
}

/* Desktop */
@media (min-width: 75rem) {
    .site-header {
        padding-inline: max(2rem, calc((100vw - var(--container-width)) / 2));
    }

    .professional-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .professional-card {
        flex-direction: column;
    }

    .profile-layout {
        grid-template-columns: minmax(0, 1fr) 340px;
        align-items: start;
    }
}