/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    font-weight: 600;
    font-size: var(--text-sm);
    border-radius: var(--radius-md);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
    white-space: nowrap;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

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

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

.btn--secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--color-accent-dim);
}

.btn--secondary:hover {
    border-color: var(--color-text-muted);
}

.btn--small {
    padding: 0.625rem 1.25rem;
    font-size: var(--text-xs);
}

/* Cards */
.card {
    background: var(--color-surface-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card__icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--color-text-primary);
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.card h4 {
    margin-bottom: 0.5rem;
}

.card p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

/* Feature list */
.feature-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.feature-list__item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
}

.feature-list__icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.feature-list__icon svg {
    width: 20px;
    height: 20px;
    stroke: var(--color-success);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Step card (How It Works) */
.step {
    text-align: center;
    position: relative;
}

.step__number {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-accent-dim);
    letter-spacing: var(--tracking-tighter);
    margin-bottom: var(--space-sm);
    line-height: 1;
}

.step__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step__icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-text-primary);
    fill: none;
    stroke-width: 1.5;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.step h3 {
    margin-bottom: 0.5rem;
    font-size: var(--text-xl);
}

.step p {
    font-size: var(--text-sm);
    max-width: 280px;
    margin: 0 auto;
}

/* Steps connector line */
.steps-container {
    position: relative;
}

.steps-connector {
    position: absolute;
    top: 72px;
    left: 20%;
    right: 20%;
    height: 0.5px;
    background: var(--color-divider);
}

/* Metric bar */
.metric-bar {
    margin-bottom: 0.75rem;
}

.metric-bar__header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.375rem;
    font-size: var(--text-xs);
}

.metric-bar__label {
    color: var(--color-text-secondary);
}

.metric-bar__value {
    color: var(--color-text-muted);
}

.metric-bar__track {
    width: 100%;
    height: 3px;
    background: var(--color-accent-dim);
    border-radius: 2px;
    overflow: hidden;
}

.metric-bar__fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 2px;
    width: 0%;
    transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}

/* Stat counter */
.stats-row {
    display: flex;
    gap: var(--space-2xl);
    margin-top: var(--space-xl);
}

.stat {
    text-align: center;
}

.stat__number {
    font-size: var(--text-3xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--tracking-tighter);
    line-height: 1;
    margin-bottom: 0.25rem;
}

.stat__label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: 1.25rem 0;
    transition: background var(--transition-base), padding var(--transition-base), backdrop-filter var(--transition-base);
}

.nav--scrolled {
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: 0.75rem 0;
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo img {
    height: 44px;
    width: auto;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

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

/* Score Ring */
.score-ring-container {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.score-ring {
    position: relative;
    width: 200px;
    height: 200px;
}

.score-ring svg {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.score-ring__bg {
    fill: none;
    stroke: var(--color-accent-dim);
    stroke-width: 3;
}

.score-ring__fill {
    fill: none;
    stroke: url(#scoreGradient);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 565.48;
    stroke-dashoffset: 565.48;
    transition: stroke-dashoffset 2s cubic-bezier(0.22, 1, 0.36, 1);
}

.score-ring__value {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.score-ring__number {
    font-size: var(--text-5xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: var(--tracking-tighter);
    line-height: 1;
}

.score-ring__label {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wide);
    margin-top: 0.25rem;
}

/* Waveform */
.waveform {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3px;
    height: 120px;
    padding: var(--space-lg);
}

.waveform__bar {
    width: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    opacity: 0.3;
    height: 15%;
    transition: height 0.3s ease, opacity 0.3s ease;
}

.waveform--animate .waveform__bar {
    animation: waveform 1.5s ease-in-out infinite alternate;
}

@keyframes waveform {
    0% { height: 15%; opacity: 0.3; }
    50% { height: var(--max-h, 60%); opacity: 0.6; }
    100% { height: var(--max-h, 80%); opacity: 0.8; }
}

/* Radar Chart */
.radar-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

.radar-chart {
    width: 280px;
    height: 280px;
}

.radar-chart__grid {
    fill: none;
    stroke: var(--color-accent-dim);
    stroke-width: 0.5;
}

.radar-chart__axis {
    stroke: var(--color-accent-dim);
    stroke-width: 0.5;
}

.radar-chart__area {
    fill: rgba(255, 255, 255, 0.06);
    stroke: var(--color-accent);
    stroke-width: 1.5;
    stroke-linejoin: round;
}

.radar-chart__point {
    fill: var(--color-accent);
}

.radar-chart__label {
    fill: var(--color-text-muted);
    font-size: 9px;
    font-family: var(--font-stack);
}

/* Email form */
.email-form {
    display: flex;
    gap: 0.75rem;
    max-width: 480px;
}

.email-form__input {
    flex: 1;
    padding: 0.875rem 1.25rem;
    background: var(--color-surface-light);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    color: var(--color-text-primary);
    border: 1px solid transparent;
    transition: border-color var(--transition-fast);
}

.email-form__input::placeholder {
    color: var(--color-text-muted);
}

.email-form__input:focus {
    border-color: var(--color-accent-dim);
}

/* Footer */
.footer {
    padding: var(--space-xl) 0;
    background: var(--color-surface);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer__brand {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer__logo img {
    height: 34px;
    width: auto;
}

.footer__tagline {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.footer__links {
    display: flex;
    gap: 1.5rem;
}

.footer__link {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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