/* ============================
   Cards
============================ */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-3);
    transition:
        transform var(--transition),
        border-color var(--transition),
        background var(--transition),
        box-shadow var(--transition);
}

.card:hover {
    background: var(--surface-hover);
    border-color: rgba(56,189,248,.35);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.card h3 {
    margin-bottom: .75rem;
}

.card p {
    margin-bottom: 1rem;
}

/* ============================
   Buttons
============================ */

/* ============================
   Buttons
============================ */

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding: .8rem 1.5rem;

    min-width: 170px;

    border: 1px solid transparent;
    border-radius: var(--radius);

    background: var(--primary);
    color: white;

    font-weight: 600;
    font-size: .95rem;

    cursor: pointer;

    transition:
        background var(--transition),
        border-color var(--transition),
        color var(--transition),
        transform var(--transition),
        box-shadow var(--transition);
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}

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

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

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

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

.button.secondary:hover {
    border-color: var(--primary);
    background: rgba(56,189,248,.08);
}

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

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

.button:disabled {
    opacity: .6;
    cursor: not-allowed;
}

/* ============================
   Badges
============================ */

.badge {
    display: inline-flex;
    align-items: center;

    padding: .35rem .75rem;

    background: rgba(56,189,248,.12);

    color: var(--primary);

    border-radius: 999px;

    font-size: .85rem;

    border: 1px solid rgba(56,189,248,.25);
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: .5rem;
}

/* ============================
   Section Titles
============================ */

.section-title {
    margin-bottom: .5rem;
}

.section-subtitle {
    margin-bottom: var(--space-4);
    max-width: 700px;
}

/* ============================
   Story Grid
============================ */

.story-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px,1fr));
    gap: var(--space-3);
}

/* ============================
   Timeline
============================ */

.timeline {
    position: relative;

    display: flex;
    flex-direction: column;

    gap: var(--space-3);

    padding-left: 2rem;
}

.timeline::before {
    content: "";

    position: absolute;

    left: .45rem;
    top: .4rem;
    bottom: .4rem;

    width: 2px;

    background: var(--border);
}

.timeline-item {
    position: relative;
}

.timeline-item::before {
    content: "";

    position: absolute;

    left: -1.8rem;
    top: .45rem;

    width: 10px;
    height: 10px;

    border-radius: 50%;

    background: var(--primary);
}

.timeline-item h3 {
    color: var(--primary);
    margin-bottom: .25rem;
}

.timeline-item h4 {
    margin-bottom: .5rem;
}

/* ============================
   Hero
============================ */

.hero {
    min-height: 70vh;

    display: flex;
    flex-direction: column;
    justify-content: center;

    gap: var(--space-3);
}

.hero p {
    max-width: 720px;
    font-size: 1.15rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

/* ============================
   Footer
============================ */

footer {
    width: min(var(--container), calc(100% - 3rem));

    margin: 0 auto;

    padding: var(--space-5) 0;

    border-top: 1px solid var(--border);

    color: var(--text-muted);

    text-align: center;
}

.card {
    position: relative;
    overflow: hidden;
}

.card::before {
    content: "";

    position: absolute;

    left: 0;
    top: 0;

    width: 100%;
    height: 2px;

    background: var(--primary);

    transform: scaleX(0);
    transform-origin: left;

    transition: transform var(--transition);
}

.card:hover::before {
    transform: scaleX(1);
}

.hero {
    min-height: 80vh;

    display: flex;
    flex-direction: column;
    justify-content: center;

    gap: 1.5rem;
}

.hero h1 {
    max-width: 900px;
}

.hero-subtitle {
    max-width: 720px;

    font-size: 1.35rem;

    color: var(--primary);

    font-weight: 600;
}

.hero-description {
    max-width: 760px;

    font-size: 1.1rem;

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

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;

    margin-top: 1rem;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;

    margin-top: 2rem;
}

.architecture-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.architecture-image {
    width: 100%;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: white;
    box-shadow: var(--shadow);
}

.architecture-caption {
    text-align: center;
    color: var(--text-muted);
    font-size: .95rem;
    font-style: italic;
}