/* ==========================================================================
   COMPONENTS.CSS - Nav, Cards, Buttons, Forms, Footer, Timeline, Pricing
   ========================================================================== */

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--nav-bg);
    backdrop-filter: var(--nav-blur);
    -webkit-backdrop-filter: var(--nav-blur);
    border-bottom: var(--nav-border);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.is-scrolled {
    background: var(--nav-bg-scrolled);
    box-shadow: var(--shadow-md);
}

.nav__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
}

.nav__logo-text {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.nav__logo-icon {
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.nav__link {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--nav-link-color);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: color var(--transition-fast);
}

.nav__link:hover { color: var(--nav-link-hover); }
.nav__link.is-active { color: var(--nav-link-active); }

.nav__link--cta {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text) !important;
    padding: var(--space-sm) var(--space-lg);
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    cursor: pointer;
}

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

.nav__toggle.is-active .nav__toggle-bar:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle.is-active .nav__toggle-bar:nth-child(2) { opacity: 0; }
.nav__toggle.is-active .nav__toggle-bar:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--text-base);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
}

.btn--primary {
    background: var(--btn-primary-bg);
    color: var(--btn-primary-text);
    box-shadow: var(--btn-primary-shadow);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn--secondary {
    background: var(--btn-secondary-bg);
    color: var(--btn-secondary-text);
    border: var(--btn-secondary-border);
}

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

.btn--full { width: 100%; }
.btn--lg { padding: var(--space-lg) var(--space-2xl); font-size: var(--text-lg); }

/* Cards */
.card {
    background: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--card-shadow);
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
    transform: var(--card-hover-transform);
    box-shadow: var(--card-hover-shadow);
    border: var(--card-hover-border);
}

/* Feature Card */
.feature-card {
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
}

.feature-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    background: var(--color-bg-tertiary);
    color: var(--color-accent-primary);
}

.feature-card__icon svg {
    width: 32px;
    height: 32px;
    stroke: currentColor;
    fill: none;
    stroke-width: 1.5;
}

.feature-card__title {
    font-size: var(--text-xl);
    margin-bottom: var(--space-sm);
}

.feature-card__text {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Portfolio/Case Study Card */
.portfolio-card {
    padding: 0;
    overflow: hidden;
}

.portfolio-card__image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.portfolio-card__content {
    padding: var(--space-lg);
}

.portfolio-card__category {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-accent-primary);
    margin-bottom: var(--space-sm);
    display: block;
}

.portfolio-card__title {
    font-size: var(--text-lg);
    margin-bottom: var(--space-sm);
}

.portfolio-card__excerpt {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

/* Pricing Card */
.pricing-card {
    padding: var(--space-2xl);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.pricing-card--featured {
    border: 1px solid rgba(0, 212, 255, 0.3);
    position: relative;
}

.pricing-card--featured::before {
    content: 'Most Popular';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-primary);
    color: #000;
    font-size: var(--text-xs);
    font-weight: 700;
    padding: 4px 16px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-card__tier {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--letter-spacing-wide);
    color: var(--color-accent-primary);
    margin-bottom: var(--space-sm);
}

.pricing-card__title {
    font-size: var(--text-2xl);
    margin-bottom: var(--space-sm);
}

.pricing-card__price {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
}

.pricing-card__price span {
    font-size: var(--text-sm);
    font-weight: 400;
    color: var(--color-text-muted);
}

.pricing-card__desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.pricing-card__features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    flex-grow: 1;
}

.pricing-card__feature {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.pricing-card__feature svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    stroke: var(--color-accent-primary);
    fill: none;
    margin-top: 2px;
}

/* Timeline */
.timeline {
    display: flex;
    gap: var(--space-xl);
    position: relative;
    padding: var(--space-xl) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.3;
    z-index: 0;
}

.timeline__step {
    flex: 1;
    text-align: center;
    position: relative;
    z-index: 1;
}

.timeline__number {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-md);
    border-radius: var(--radius-full);
    background: var(--gradient-primary);
    color: #000;
    font-weight: 700;
    font-size: var(--text-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.timeline__title {
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
}

.timeline__desc {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    max-width: 200px;
    margin: 0 auto;
}

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

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

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

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-md);
    font-size: var(--text-base);
    background: var(--input-bg);
    border: var(--input-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

.form-select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    background-size: 16px;
    padding-right: var(--space-2xl);
}

/* Footer */
.footer {
    background: var(--color-bg-secondary);
    padding: var(--space-3xl) 0 var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-primary);
    font-weight: 600;
}

.footer__links {
    display: flex;
    gap: var(--space-lg);
}

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

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

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    width: 100%;
    text-align: center;
    margin-top: var(--space-xl);
    padding-top: var(--space-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

/* ==========================================================================
   RESEARCH SECTIONS
   ========================================================================== */

/* Stat Grid */
.stat-grid {
    display: grid;
    gap: var(--space-lg);
}

.stat-grid--3 { grid-template-columns: repeat(3, 1fr); }
.stat-grid--4 { grid-template-columns: repeat(4, 1fr); }

/* Stat Box */
.stat-box {
    background: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl) var(--space-lg);
    text-align: center;
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.stat-box:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-card-hover);
    border-color: rgba(0, 212, 255, 0.3);
}

.stat-box__number {
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-xs);
    line-height: 1.2;
}

.stat-box__label {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Barrier Bar */
.barrier-bar {
    width: 100%;
    height: 8px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.barrier-bar__fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Solution Card */
.solution-card {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.solution-card:hover {
    border-color: rgba(0, 212, 255, 0.3);
}

.solution-card__icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-primary);
    flex-shrink: 0;
}

/* Priority Table */
.priority-table {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.priority-row {
    display: grid;
    grid-template-columns: 48px 1fr 1fr;
    gap: var(--space-md);
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--card-bg);
    border: var(--card-border);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast);
}

.priority-row:hover {
    border-color: rgba(0, 212, 255, 0.3);
}

.priority-rank {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-accent-primary);
    text-align: center;
}

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

.priority-bar {
    width: 100%;
    height: 6px;
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.priority-bar__fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Callout Card */
.callout-card {
    padding: var(--space-xl) var(--space-2xl);
}

/* Responsive */
@media (max-width: 1023px) {
    .nav__toggle { display: flex; }
    .nav__menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: var(--space-md);
        background: var(--nav-bg-scrolled);
        border-bottom: var(--nav-border);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform var(--transition-base), opacity var(--transition-base), visibility var(--transition-base);
    }
    .nav__menu.is-open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    .nav__link {
        width: 100%;
        padding: var(--space-md);
        text-align: center;
    }

    .timeline {
        flex-direction: column;
        gap: var(--space-2xl);
    }
    .timeline::before {
        top: 0;
        bottom: 0;
        left: 50%;
        right: auto;
        width: 2px;
        height: 100%;
    }
    .timeline__desc {
        max-width: none;
    }
}

@media (max-width: 639px) {
    .nav__container { height: 64px; }
    .btn { padding: var(--space-sm) var(--space-lg); }
    .footer__content { flex-direction: column; text-align: center; }
    .footer__links { flex-wrap: wrap; justify-content: center; }

    .stat-grid--3,
    .stat-grid--4 { grid-template-columns: 1fr; }

    .priority-row {
        grid-template-columns: 40px 1fr;
    }
    .priority-bar {
        grid-column: 1 / -1;
    }
}

@media (min-width: 640px) and (max-width: 1023px) {
    .stat-grid--3 { grid-template-columns: repeat(3, 1fr); }
    .stat-grid--4 { grid-template-columns: repeat(2, 1fr); }
}

/* Language Toggle */
.lang-toggle {
    padding: var(--space-sm) var(--space-md);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-accent-primary);
    background: transparent;
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: inherit;
}

.lang-toggle:hover {
    background: var(--color-accent-primary);
    color: var(--color-bg-primary);
}

/* RTL Overrides */
[dir="rtl"] {
    font-family: 'Heebo', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

[dir="rtl"] .section__title,
[dir="rtl"] .section__header {
    text-align: center;
}

[dir="rtl"] .split__content .section__title {
    text-align: right;
}

[dir="rtl"] .split__content {
    text-align: right;
}

[dir="rtl"] .split__content .btn {
    align-self: flex-end;
}

[dir="rtl"] .pricing-card__feature {
    flex-direction: row-reverse;
}

[dir="rtl"] .solution-card {
    /* RTL naturally reverses flex row — no row-reverse needed */
    text-align: right;
}

[dir="rtl"] .solution-card div:not(.solution-card__icon) {
    text-align: right;
}

[dir="rtl"] .barrier-item div {
    flex-direction: row-reverse;
}

[dir="rtl"] .priority-row {
    direction: rtl;
}

[dir="rtl"] .priority-label {
    text-align: right;
}

[dir="rtl"] #about p {
    text-align: right;
}

/* Flip inline padding/position for RTL list markers */
[dir="rtl"] li[style*="padding-left"] {
    padding-left: 0 !important;
    padding-right: 20px !important;
}

[dir="rtl"] li span[style*="left: 0"] {
    left: auto !important;
    right: 0 !important;
}

[dir="rtl"] .footer__content {
    direction: rtl;
}