/* RESET y base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #F7F5EE;
    font-family: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    line-height: 1.5;
    color: #2C2A3A;
    scroll-behavior: smooth;
}

/* Paleta de colores */
:root {
    --color-primary: #55507A;
    --color-secondary: #72A8BA;
    --color-accent: #9EC1A7;
    --color-light: #D8DDBD;
    --color-bg-card: #FFFFFF;
    --color-text-dark: #2D2B3B;
}

/* ========== HERO ========== */
.hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, #6C628F 100%);
    color: white;
    padding: 4rem 2rem 5rem 2rem;
    border-bottom: 6px solid var(--color-accent);
}

.hero__container {
    max-width: 1200px;
    margin: 0 auto;
}

.hero__badge {
    background-color: rgba(255,255,240,0.2);
    backdrop-filter: blur(4px);
    display: inline-block;
    padding: 0.4rem 1rem;
    border-radius: 40px;
    font-size: 0.8rem;
    letter-spacing: 1px;
    font-weight: 500;
    margin-bottom: 1.5rem;
    border-left: 3px solid var(--color-light);
}

.hero__title {
    font-size: 3.6rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero__subline {
    font-weight: 400;
    font-size: 2rem;
    color: var(--color-light);
    display: block;
}

.hero__description {
    font-size: 1.2rem;
    max-width: 680px;
    margin: 1.5rem 0 1.8rem;
    opacity: 0.92;
}

.hero__meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255,255,210,0.25);
    padding-top: 1.2rem;
    margin-top: 0.8rem;
}

/* ========== CONTEXTO + TIMELINE ========== */
.context {
    background-color: var(--color-light);
    padding: 3rem 2rem;
}

.context__inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: center;
}

.context__text {
    flex: 2;
}

.context__text h2 {
    font-size: 1.8rem;
    color: var(--color-primary);
    margin-bottom: 1rem;
    border-left: 5px solid var(--color-secondary);
    padding-left: 1rem;
}

.context__text p {
    margin-bottom: 1rem;
    color: #2e3a2c;
}

.timeline {
    flex: 1.5;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    background: rgba(255,255,245,0.7);
    padding: 1.8rem;
    border-radius: 28px;
    backdrop-filter: blur(2px);
}

.timeline__node {
    border-left: 3px solid var(--color-secondary);
    padding-left: 1rem;
}

.timeline__year {
    font-weight: 700;
    font-size: 1rem;
    color: var(--color-primary);
    display: block;
}

.timeline__node p {
    font-size: 0.9rem;
}

/* ========== PROYECTOS ========== */
.projects {
    padding: 4rem 2rem;
    background: #FEFCF5;
}

.projects__container {
    max-width: 1300px;
    margin: 0 auto;
}

.projects__title {
    font-size: 2.2rem;
    color: var(--color-primary);
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.projects__intro {
    font-size: 1.1rem;
    margin-bottom: 2.5rem;
    color: #4f4b66;
    max-width: 700px;
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

/* CARDS */
.card {
    background: var(--color-bg-card);
    border-radius: 1.5rem;
    padding: 1.6rem;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.03), 0 2px 6px rgba(85, 80, 122, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #f0edd9;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 30px -12px rgba(85, 80, 122, 0.2);
    border-color: var(--color-accent);
}

.card__img {
    width: 100%;
    height: 180px;
    overflow: hidden;
    border-radius: 1rem;
    margin-bottom: 1rem;
    background-color: #f0f0f0;
}

.card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card:hover .card__img img {
    transform: scale(1.02);
}

.card__header {
    margin-bottom: 0.8rem;
}

.card__title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
}

.card__desc {
    color: #3d3b4b;
    margin: 0.5rem 0 1rem;
    font-size: 0.9rem;
    flex: 1;
}

.card__tech {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin: 0.8rem 0;
}

.card__tech span {
    background-color: #edeef0;
    padding: 0.2rem 0.7rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 500;
    color: #3f3d54;
}

.card__learning {
    font-size: 0.8rem;
    color: var(--color-secondary);
    border-top: 1px dashed #e2e0cf;
    padding-top: 0.8rem;
    margin: 0.8rem 0 1rem;
    font-weight: 500;
}

.card__btn {
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: 0.7rem 1.2rem;
    border-radius: 40px;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s ease;
    margin-top: auto;
    width: fit-content;
    cursor: pointer;
}

.card__btn:hover {
    background-color: #6F649B;
    transform: scale(0.97);
    box-shadow: 0 4px 10px rgba(85, 80, 122, 0.3);
}

/* ========== FOOTER ========== */
.footer {
    background-color: #2C2A3A;
    color: #dbdbc8;
    padding: 2.5rem 2rem 1rem;
    border-top: 5px solid var(--color-accent);
}

.footer__content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
}

.footer__col {
    flex: 1;
    min-width: 200px;
}

.footer__col h4, .footer__col h5 {
    color: var(--color-light);
    margin-bottom: 0.8rem;
}

.footer__col p, .footer__col li {
    font-size: 0.85rem;
    line-height: 1.4;
    list-style: none;
}

.footer__col ul {
    list-style: none;
}

.footer__col li {
    margin-bottom: 0.4rem;
}

.footer__sign {
    display: inline-block;
    margin-top: 1rem;
    font-size: 0.75rem;
    font-style: italic;
    border-left: 2px solid var(--color-secondary);
    padding-left: 0.5rem;
}

.footer__bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 1.2rem;
    border-top: 1px solid #4a4862;
    font-size: 0.75rem;
    color: #a3a2b5;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 780px) {
    .hero__title {
        font-size: 2.5rem;
    }
    .hero__subline {
        font-size: 1.5rem;
    }
    .context__inner {
        flex-direction: column;
    }
    .cards-grid {
        grid-template-columns: 1fr;
    }
    .footer__content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 2rem 1rem 3rem;
    }
    .hero__description {
        font-size: 1rem;
    }
    .card {
        padding: 1.2rem;
    }
    .card__img {
        height: 140px;
    }
}