/* ============================================================
   KLINE GROUP — Shared Stylesheet
   Nettoyage professionnel de hottes & conduits | Lyon, France
   ============================================================ */

/* ------------------------------------------------------------------
   1. CSS RESET & ROOT VARIABLES
   ------------------------------------------------------------------ */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --ink: #0a0f1a;
    --white: #fafbfc;
    --accent: #1a6b4a;
    --accent-light: #e8f5ee;
    --warm: #f6f2ed;
    --gray-100: #f4f5f7;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gold: #c8a250;

    /* Derived colors */
    --accent-hover: #155a3e;
    --accent-dark: #0f4a32;
    --error: #dc2626;
    --error-light: #fef2f2;
    --success: #16a34a;
    --success-light: #f0fdf4;

    /* Spacing scale */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Sizing */
    --max-width: 1200px;
    --nav-height: 72px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);

    /* Border radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    /* Transitions */
    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
    --transition-fast: 150ms var(--ease-out);
    --transition-base: 250ms var(--ease-out);
    --transition-slow: 400ms var(--ease-out);
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
}

/* ------------------------------------------------------------------
   2. BODY TYPOGRAPHY
   ------------------------------------------------------------------ */
body {
    font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--ink);
    background: var(--white);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Space Grotesk', -apple-system, sans-serif;
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.5px;
    color: var(--ink);
}

h1 {
    font-size: clamp(2.8rem, 6vw, 5rem);
    letter-spacing: -2px;
    line-height: 1.08;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    letter-spacing: -1px;
}

h3 {
    font-size: 1.35rem;
    letter-spacing: -0.3px;
}

h4 {
    font-size: 1.1rem;
    font-weight: 600;
}

p {
    line-height: 1.7;
    color: var(--gray-700);
}

.text-sm {
    font-size: 0.875rem;
}

.text-lg {
    font-size: 1.125rem;
}

.text-accent {
    color: var(--accent);
}

.text-muted {
    color: var(--gray-500);
}

/* ------------------------------------------------------------------
   3. NAVIGATION
   ------------------------------------------------------------------ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    padding: 0 var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(250, 251, 252, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav--scrolled {
    background: rgba(250, 251, 252, 0.96);
    box-shadow: var(--shadow-sm);
}

.nav__logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.35rem;
    letter-spacing: -0.5px;
    color: var(--ink);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav__logo span {
    color: var(--accent);
}

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

.nav__link {
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--gray-700);
    position: relative;
    transition: color var(--transition-fast);
    padding: var(--space-xs) 0;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent);
    border-radius: 1px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-base);
}

.nav__link:hover,
.nav__link--active {
    color: var(--ink);
}

.nav__link:hover::after,
.nav__link--active::after {
    transform: scaleX(1);
}

.nav__cta {
    font-size: 0.88rem;
    font-weight: 600;
    padding: 0.6rem 1.25rem;
    background: var(--accent);
    color: var(--white);
    border-radius: var(--radius-sm);
    transition: background var(--transition-fast), transform var(--transition-fast);
}

.nav__cta:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

.nav__tag {
    font-size: 0.8rem;
    color: var(--gray-500);
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-weight: 500;
}

/* Mobile menu toggle */
.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 24px;
    padding: 4px 0;
}

.nav__toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--ink);
    border-radius: 2px;
    transition: transform var(--transition-base), opacity var(--transition-fast);
}

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

.nav__toggle--open span:nth-child(2) {
    opacity: 0;
}

.nav__toggle--open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile nav panel */
.nav__mobile {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    padding: var(--space-2xl);
    flex-direction: column;
    gap: var(--space-lg);
    z-index: 999;
}

.nav__mobile--open {
    display: flex;
}

.nav__mobile .nav__link {
    font-size: 1.2rem;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--gray-100);
}

/* ------------------------------------------------------------------
   4. PAGE HERO / HEADER (Inner Pages)
   ------------------------------------------------------------------ */
.page-hero {
    padding: calc(var(--nav-height) + 4rem) var(--space-xl) 3.5rem;
    max-width: var(--max-width);
    margin: 0 auto;
}

.page-hero--centered {
    text-align: center;
}

.page-hero__overline {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.82rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.page-hero__title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    max-width: 750px;
    margin-bottom: var(--space-lg);
}

.page-hero--centered .page-hero__title {
    margin-left: auto;
    margin-right: auto;
}

.page-hero__title em {
    font-style: normal;
    color: var(--accent);
}

.page-hero__description {
    font-size: 1.15rem;
    color: var(--gray-700);
    max-width: 600px;
    line-height: 1.75;
}

.page-hero--centered .page-hero__description {
    margin-left: auto;
    margin-right: auto;
}

/* Landing hero (full-height) */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem var(--space-xl) var(--space-4xl);
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-overline {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero h1 em {
    font-style: normal;
    color: var(--accent);
}

.hero-sub {
    font-size: 1.25rem;
    color: var(--gray-700);
    max-width: 560px;
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-3xl);
    padding-top: var(--space-xl);
    border-top: 1px solid var(--gray-300);
}

.stat-item h3 {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -1px;
}

.stat-item p {
    font-size: 0.9rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
    max-width: 160px;
}

/* ------------------------------------------------------------------
   5. CONTENT SECTIONS
   ------------------------------------------------------------------ */
.section {
    padding: var(--space-4xl) var(--space-xl);
}

.section--warm {
    background: var(--warm);
}

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

.section--dark p {
    color: rgba(255, 255, 255, 0.7);
}

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

.section--gray {
    background: var(--gray-100);
}

.section__inner {
    max-width: var(--max-width);
    margin: 0 auto;
}

.section__label {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.section--dark .section__label {
    color: var(--gold);
}

.section__title {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    max-width: 650px;
    margin-bottom: var(--space-2xl);
    line-height: 1.15;
}

.section--dark .section__title {
    color: var(--white);
}

.section__title em {
    font-style: normal;
    color: var(--accent);
}

.section--dark .section__title em {
    color: var(--gold);
}

.section__description {
    font-size: 1.1rem;
    max-width: 560px;
    line-height: 1.75;
    margin-bottom: var(--space-2xl);
}

/* Two-column content layout */
.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

.content-grid--reverse {
    direction: rtl;
}

.content-grid--reverse > * {
    direction: ltr;
}

/* ------------------------------------------------------------------
   6. SERVICE CARD GRID
   ------------------------------------------------------------------ */
.service-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.service-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2.5rem 2rem;
    border: 1px solid rgba(0, 0, 0, 0.06);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.service-card__number {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--accent-light);
    line-height: 1;
    margin-bottom: 1.25rem;
}

.service-card__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-lg);
    font-size: 1.3rem;
}

.service-card__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--ink);
}

.service-card__text {
    color: var(--gray-500);
    font-size: 0.95rem;
    line-height: 1.65;
}

.service-card__link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent);
    transition: gap var(--transition-fast);
}

.service-card__link:hover {
    gap: var(--space-md);
}

.service-card__link::after {
    content: '\2192';
    transition: transform var(--transition-fast);
}

/* ------------------------------------------------------------------
   7. REGULATION / COMPLIANCE ITEMS
   ------------------------------------------------------------------ */
.compliance-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.reg-item {
    padding: 2rem;
    border-left: 3px solid var(--accent);
    background: var(--gray-100);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.reg-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.reg-item__tag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--accent);
    background: var(--accent-light);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
}

.reg-item__title {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: var(--space-sm);
    color: var(--ink);
}

.reg-item__text {
    color: var(--gray-500);
    font-size: 0.9rem;
    line-height: 1.65;
}

/* ------------------------------------------------------------------
   8. FORM STYLES
   ------------------------------------------------------------------ */
.form {
    max-width: 640px;
}

.form--centered {
    margin-left: auto;
    margin-right: auto;
}

.form__group {
    margin-bottom: var(--space-lg);
}

.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.form__label {
    display: block;
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--ink);
    margin-bottom: var(--space-sm);
}

.form__label--required::after {
    content: ' *';
    color: var(--error);
}

.form__input,
.form__select,
.form__textarea {
    width: 100%;
    padding: 0.85rem 1rem;
    font-size: 0.95rem;
    background: var(--white);
    border: 1.5px solid var(--gray-300);
    border-radius: var(--radius-sm);
    outline: none;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: var(--gray-500);
    opacity: 0.7;
}

.form__input:hover,
.form__select:hover,
.form__textarea:hover {
    border-color: var(--gray-500);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(26, 107, 74, 0.1);
}

.form__input--error,
.form__select--error,
.form__textarea--error {
    border-color: var(--error);
}

.form__input--error:focus,
.form__select--error:focus,
.form__textarea--error:focus {
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.form__select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M2 4l4 4 4-4' fill='none' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 2.5rem;
}

.form__textarea {
    min-height: 140px;
    resize: vertical;
    line-height: 1.6;
}

.form__hint {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-top: var(--space-xs);
}

.form__error {
    font-size: 0.8rem;
    color: var(--error);
    margin-top: var(--space-xs);
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.form__error::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 14 14'%3E%3Ccircle cx='7' cy='7' r='6' fill='none' stroke='%23dc2626' stroke-width='1.2'/%3E%3Cline x1='7' y1='4' x2='7' y2='8' stroke='%23dc2626' stroke-width='1.2' stroke-linecap='round'/%3E%3Ccircle cx='7' cy='10' r='0.8' fill='%23dc2626'/%3E%3C/svg%3E") no-repeat center;
    flex-shrink: 0;
}

/* Checkbox */
.form__checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    cursor: pointer;
}

.form__checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--gray-300);
    border-radius: 4px;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    flex-shrink: 0;
    margin-top: 2px;
    transition: background var(--transition-fast), border-color var(--transition-fast);
    position: relative;
}

.form__checkbox input[type="checkbox"]:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.form__checkbox input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 6px;
    width: 4px;
    height: 8px;
    border: solid var(--white);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.form__checkbox input[type="checkbox"]:focus {
    box-shadow: 0 0 0 3px rgba(26, 107, 74, 0.1);
}

.form__checkbox-label {
    font-size: 0.9rem;
    color: var(--gray-700);
    line-height: 1.5;
}

/* Radio */
.form__radio {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    cursor: pointer;
}

.form__radio input[type="radio"] {
    width: 18px;
    height: 18px;
    border: 1.5px solid var(--gray-300);
    border-radius: 50%;
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color var(--transition-fast);
    position: relative;
}

.form__radio input[type="radio"]:checked {
    border-color: var(--accent);
}

.form__radio input[type="radio"]:checked::after {
    content: '';
    position: absolute;
    top: 4px;
    left: 4px;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
}

/* ------------------------------------------------------------------
   9. BUTTON STYLES
   ------------------------------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 0.85rem 1.75rem;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
    text-align: center;
    line-height: 1.3;
}

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

.btn--primary:hover {
    background: var(--accent-hover);
    border-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(26, 107, 74, 0.25);
}

.btn--primary:active {
    transform: translateY(0);
    box-shadow: none;
}

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

.btn--secondary:hover {
    background: var(--accent-light);
    transform: translateY(-1px);
}

.btn--secondary:active {
    transform: translateY(0);
}

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

.btn--white:hover {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn--ghost {
    background: transparent;
    color: var(--ink);
    border: 2px solid transparent;
    padding: 0.85rem 1rem;
}

.btn--ghost:hover {
    background: var(--gray-100);
}

.btn--sm {
    font-size: 0.85rem;
    padding: 0.6rem 1.25rem;
}

.btn--lg {
    font-size: 1.05rem;
    padding: 1rem 2.25rem;
}

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

.btn--disabled,
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ------------------------------------------------------------------
   10. FOOTER
   ------------------------------------------------------------------ */
.footer {
    border-top: 1px solid var(--gray-100);
    padding: var(--space-3xl) var(--space-xl) var(--space-2xl);
}

.footer__inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-3xl);
}

.footer__brand {
    max-width: 280px;
}

.footer__logo {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--ink);
    margin-bottom: var(--space-md);
}

.footer__logo span {
    color: var(--accent);
}

.footer__tagline {
    font-size: 0.9rem;
    color: var(--gray-500);
    line-height: 1.6;
}

.footer__col-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.82rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--ink);
    margin-bottom: var(--space-lg);
}

.footer__link {
    display: block;
    font-size: 0.9rem;
    color: var(--gray-500);
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

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

.footer__bottom {
    max-width: var(--max-width);
    margin: var(--space-2xl) auto 0;
    padding-top: var(--space-xl);
    border-top: 1px solid var(--gray-100);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.82rem;
    color: var(--gray-500);
}

.footer__legal {
    display: flex;
    gap: var(--space-xl);
}

.footer__legal a {
    transition: color var(--transition-fast);
}

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

/* Minimal footer variant */
.footer--minimal {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
}

.footer--minimal .footer__inner {
    display: block;
}

/* ------------------------------------------------------------------
   11. CTA BANNER
   ------------------------------------------------------------------ */
.cta-banner {
    background: var(--accent);
    color: var(--white);
    padding: var(--space-4xl) var(--space-xl);
    text-align: center;
}

.cta-banner__inner {
    max-width: 700px;
    margin: 0 auto;
}

.cta-banner__title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(2rem, 4vw, 3.2rem);
    font-weight: 700;
    letter-spacing: -1px;
    color: var(--white);
    margin-bottom: var(--space-lg);
    line-height: 1.15;
}

.cta-banner__text {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.8);
    max-width: 520px;
    margin: 0 auto var(--space-2xl);
    line-height: 1.7;
}

.cta-banner__actions {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Dark variant */
.cta-banner--dark {
    background: var(--ink);
}

/* ------------------------------------------------------------------
   12. BREADCRUMB
   ------------------------------------------------------------------ */
.breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.85rem;
    color: var(--gray-500);
    padding: var(--space-md) 0;
}

.breadcrumb__item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.breadcrumb__item a {
    color: var(--gray-500);
    transition: color var(--transition-fast);
}

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

.breadcrumb__separator {
    font-size: 0.75rem;
    color: var(--gray-300);
}

.breadcrumb__separator::after {
    content: '/';
}

.breadcrumb__current {
    color: var(--ink);
    font-weight: 500;
}

/* ------------------------------------------------------------------
   13. FEATURE LIST (Checkmarks, Icons)
   ------------------------------------------------------------------ */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.feature-list__item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    font-size: 1rem;
    color: var(--gray-700);
    line-height: 1.6;
}

.feature-list__icon {
    width: 24px;
    height: 24px;
    min-width: 24px;
    border-radius: 50%;
    background: var(--accent-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    position: relative;
}

.feature-list__icon::after {
    content: '';
    width: 10px;
    height: 6px;
    border-left: 2px solid var(--accent);
    border-bottom: 2px solid var(--accent);
    transform: rotate(-45deg);
    margin-top: -2px;
}

.feature-list--large .feature-list__item {
    gap: var(--space-lg);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--gray-100);
}

.feature-list--large .feature-list__icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: var(--radius-md);
}

.feature-list--large .feature-list__icon::after {
    width: 13px;
    height: 8px;
    border-width: 2.5px;
}

.feature-list__content strong {
    display: block;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.05rem;
    color: var(--ink);
    margin-bottom: var(--space-xs);
}

/* Horizontal feature list */
.feature-list--horizontal {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--space-xl);
}

/* Icon variant (custom icon instead of checkmark) */
.feature-list__icon--custom::after {
    display: none;
}

/* ------------------------------------------------------------------
   14. SUCCESS / ERROR MESSAGES
   ------------------------------------------------------------------ */
.message {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.92rem;
    line-height: 1.6;
}

.message--success {
    background: var(--success-light);
    border: 1px solid rgba(22, 163, 74, 0.2);
    color: #15803d;
}

.message--error {
    background: var(--error-light);
    border: 1px solid rgba(220, 38, 38, 0.2);
    color: #991b1b;
}

.message--info {
    background: #eff6ff;
    border: 1px solid rgba(59, 130, 246, 0.2);
    color: #1e40af;
}

.message--warning {
    background: #fffbeb;
    border: 1px solid rgba(245, 158, 11, 0.2);
    color: #92400e;
}

.message__icon {
    width: 22px;
    height: 22px;
    min-width: 22px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    margin-top: 1px;
}

.message--success .message__icon {
    background: rgba(22, 163, 74, 0.15);
}

.message--error .message__icon {
    background: rgba(220, 38, 38, 0.15);
}

.message__content strong {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

/* Inline form messages */
.form-message {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.form-message--success {
    background: var(--success-light);
    color: #15803d;
    border: 1px solid rgba(22, 163, 74, 0.15);
}

.form-message--error {
    background: var(--error-light);
    color: #991b1b;
    border: 1px solid rgba(220, 38, 38, 0.15);
}

/* ------------------------------------------------------------------
   15. RESPONSIVE DESIGN (Mobile-First Breakpoints)
   ------------------------------------------------------------------ */

/* Base (mobile) adjustments */
@media (max-width: 767px) {
    :root {
        --nav-height: 60px;
    }

    .nav {
        padding: 0 var(--space-lg);
    }

    .nav__links {
        display: none;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__tag {
        display: none;
    }

    /* Hero */
    .hero {
        padding: 7rem var(--space-lg) var(--space-2xl);
        min-height: auto;
    }

    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }

    .stat-item p {
        max-width: none;
    }

    /* Page hero */
    .page-hero {
        padding: calc(var(--nav-height) + 2.5rem) var(--space-lg) var(--space-2xl);
    }

    /* Sections */
    .section {
        padding: var(--space-2xl) var(--space-lg);
    }

    /* Grids */
    .content-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .content-grid--reverse {
        direction: ltr;
    }

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

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

    /* Forms */
    .form__row {
        grid-template-columns: 1fr;
    }

    /* Buttons */
    .btn--lg {
        width: 100%;
    }

    /* Footer */
    .footer__inner {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer__bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .footer__legal {
        justify-content: center;
    }

    /* CTA Banner */
    .cta-banner {
        padding: var(--space-2xl) var(--space-lg);
    }

    .cta-banner__actions {
        flex-direction: column;
        align-items: center;
    }

    /* Feature list */
    .feature-list--horizontal {
        flex-direction: column;
    }

    /* Breadcrumb */
    .breadcrumb {
        flex-wrap: wrap;
    }
}

/* Tablet (768px and up) */
@media (min-width: 768px) and (max-width: 1023px) {
    .nav__links {
        gap: var(--space-lg);
    }

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

    .footer__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-2xl);
    }

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

/* Desktop (1024px and up) */
@media (min-width: 1024px) {
    .nav__toggle {
        display: none;
    }

    .nav__links {
        display: flex;
    }
}

/* Large screens */
@media (min-width: 1400px) {
    :root {
        --max-width: 1320px;
    }
}

/* ------------------------------------------------------------------
   16. ANIMATIONS (Subtle Fade-In on Scroll)
   ------------------------------------------------------------------ */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(24px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Intersection Observer animation classes */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll--visible {
    opacity: 1;
    transform: translateY(0);
}

.animate-on-scroll--left {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll--left.animate-on-scroll--visible {
    transform: translateX(0);
}

.animate-on-scroll--right {
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}

.animate-on-scroll--right.animate-on-scroll--visible {
    transform: translateX(0);
}

/* Stagger children animations */
.animate-stagger > * {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s var(--ease-out), transform 0.5s var(--ease-out);
}

.animate-stagger--visible > *:nth-child(1) { transition-delay: 0ms; opacity: 1; transform: translateY(0); }
.animate-stagger--visible > *:nth-child(2) { transition-delay: 80ms; opacity: 1; transform: translateY(0); }
.animate-stagger--visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: translateY(0); }
.animate-stagger--visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: translateY(0); }
.animate-stagger--visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: translateY(0); }
.animate-stagger--visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: translateY(0); }

/* Respect reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .animate-on-scroll,
    .animate-on-scroll--left,
    .animate-on-scroll--right {
        opacity: 1;
        transform: none;
    }

    .animate-stagger > * {
        opacity: 1;
        transform: none;
    }
}

/* ------------------------------------------------------------------
   UTILITY CLASSES
   ------------------------------------------------------------------ */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

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

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

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }