/* ===========================
   BUTTONS
   =========================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 2px solid transparent;
    cursor: pointer;
    transition: background-color var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition);
    white-space: nowrap;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    font-size: var(--text-base);
    line-height: 1;
}

.btn--pill { border-radius: var(--radius-full); }

.btn--sm  { padding: 0.5rem 1.125rem; font-size: var(--text-sm); }
.btn--lg  { padding: 1rem 2rem; font-size: var(--text-lg); }
.btn--hero { padding: 0.95rem 2.65rem; font-size: 1.95rem; }

.btn--primary {
    background-color: var(--color-primary);
    color: #fff;
    box-shadow: 0 6px 14px rgba(18, 66, 35, 0.16);
}
.btn--primary:hover { background-color: var(--color-primary-dark); }

.btn--accent {
    background-color: var(--color-accent);
    color: #fff;
}
.btn--accent:hover { background-color: var(--color-accent-hover); }

.btn--outline {
    background-color: transparent;
    border-color: var(--color-primary);
    color: var(--color-primary);
}
.btn--outline:hover {
    background-color: var(--color-primary);
    color: #fff;
}

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

.btn--ghost {
    background-color: transparent;
    color: var(--color-text);
}
.btn--ghost:hover { background-color: var(--color-bg-gray); }

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

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

/* ===========================
   NAVIGATION
   =========================== */

.site-header {
    position: relative;
    z-index: 1200;
    background-color: var(--color-bg);
    border-bottom: 1px solid #ececec;
    padding-block: 1.18rem;
}

.site-header--transparent {
    background-color: transparent;
    border-color: transparent;
    position: absolute;
    width: 100%;
}

.nav {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1.5rem;
}

.nav__logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    color: var(--color-text);
    flex-shrink: 0;
}

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

.nav__links {
    display: flex;
    align-items: center;
    gap: 1.4rem;
    margin-left: 0;
    justify-self: center;
}

.nav > .btn {
    min-height: 40px;
    padding: 0.64rem 1.65rem;
    font-size: 0.9rem;
    font-weight: 700;
}

.nav__link {
    padding: 0.2rem 0.1rem 0.5rem;
    font-size: var(--text-sm);
    font-weight: 600;
    color: #4b5563;
    border-radius: 0;
    border-bottom: 2px solid transparent;
    transition: color var(--transition), border-color var(--transition);
}

.nav__link:hover,
.nav__link--active {
    color: var(--color-primary);
    background-color: transparent;
    border-color: #36b08f;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    margin-left: auto;
}

.nav__toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

/* ===========================
   FORMS
   =========================== */

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-border-focus);
    box-shadow: 0 0 0 3px rgba(64, 145, 108, 0.15);
}

.form-input--error { border-color: var(--color-error); }

.form-error {
    font-size: var(--text-xs);
    color: var(--color-error);
}

.form-hint {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.form-input-wrapper {
    position: relative;
}

.form-input-wrapper .form-input {
    padding-right: 2.75rem;
}

.form-input-icon {
    position: absolute;
    right: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.625rem;
}

.checkbox-group input[type="checkbox"] {
    width: 1rem;
    height: 1rem;
    margin-top: 0.125rem;
    accent-color: var(--color-primary);
    flex-shrink: 0;
    cursor: pointer;
}

.checkbox-group label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
    cursor: pointer;
}

/* ===========================
   CARDS
   =========================== */

.card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
}

.card--shadow { box-shadow: var(--shadow-md); }
.card--hover  { transition: box-shadow var(--transition), transform var(--transition); }
.card--hover:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

/* ===========================
   ALERT / FLASH MESSAGES
   =========================== */

.alert {
    padding: 0.875rem 1rem;
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    border: 1px solid transparent;
}

.alert--error {
    background-color: #FEF2F2;
    color: #991B1B;
    border-color: #FECACA;
}

.alert--success {
    background-color: var(--green-50);
    color: var(--green-800);
    border-color: var(--green-200);
}

/* ===========================
   BADGE / CHIP
   =========================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge--green {
    background-color: var(--green-100);
    color: var(--green-800);
}

.badge--warning {
    background-color: #FEF3C7;
    color: #92400E;
}

.badge--error {
    background-color: #FEE2E2;
    color: #991B1B;
}

/* ===========================
   SECTION COMMON
   =========================== */

.section { padding-block: 5rem; }
.section--gray { background-color: var(--color-bg-gray); }
.section--dark {
    background-color: var(--color-bg-dark);
    color: #fff;
}
.section--dark h2,
.section--dark h3,
.section--dark p { color: #fff; }

.section__label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
}

.section__title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.section__subtitle {
    font-size: 1.2rem;
    color: #6f6f72;
}

/* ===========================
   FOOTER
   =========================== */

.site-footer {
    background-color: #f9f9f9;
    color: #555;
    padding-block: 4rem 1.5rem;
    border-top: 1px solid #eaeaea;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2.2fr repeat(3, 1fr);
    gap: 3rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid #eaeaea;
}

.footer__logo {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    text-decoration: none;
}

.footer__tagline {
    font-size: 0.95rem;
    line-height: 1.6;
    max-width: 32ch;
    color: #666;
}

.footer__heading {
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1.25rem;
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 0.95rem;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer__list li {
    line-height: 1.4;
}

.footer__list a {
    color: #555;
    text-decoration: none;
    transition: color var(--transition);
}

.footer__list a:hover {
    color: var(--color-brand);
}

.footer__bottom {
    padding-top: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.8rem;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ===========================
   RESPONSIVE NAV & FOOTER
   =========================== */

.nav-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1180;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all 0.3s ease;
}
.nav-overlay.is-active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

@media (max-width: 900px) {
    .footer__grid {
        grid-template-columns: 1fr 1fr;
        gap: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav__toggle {
        display: flex;
        z-index: 1230;
        position: relative;
    }

    .nav__toggle.is-active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav__toggle.is-active span:nth-child(2) { opacity: 0; }
    .nav__toggle.is-active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

    .nav__links {
        position: fixed;
        top: 0;
        right: -320px;
        width: 300px;
        max-width: 85%;
        height: 100vh;
        background-color: #fff;
        z-index: 1220;
        display: flex;
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right 0.4s cubic-bezier(0.4, 0, 0.2, 1);
        box-shadow: -5px 0 25px rgba(0,0,0,0.05);
        align-items: flex-start;
        overflow-y: auto;
    }

    .nav__links.is-open {
        right: 0;
    }

    .nav__link {
        font-size: 1.25rem;
        padding: 0.5rem 0;
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    .nav { position: static; display: flex; justify-content: space-between; }

    /* Make CTA button visible inside menu on mobile or move to header? Just hide for now */
    .nav > .btn { display: none; }
}

@media (max-width: 480px) {
    .footer__grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .footer__bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}