/* =========================================================
   20 ANOS — Página de celebração
   ========================================================= */

.anos-main {
    overflow-x: hidden;
}

.anos-eyebrow {
    display: inline-block;
    text-transform: uppercase;
    letter-spacing: 0.22em;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--primary);
}

/* ---------- HERO ---------- */

header.anos-hero {
    position: relative;
    width: 100%;
    min-height: 88vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background-color: var(--dark);
    padding: 4rem 1.5rem;
}

.anos-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(circle at 20% 20%, rgba(232, 111, 7, 0.55), transparent 42%),
        radial-gradient(circle at 82% 78%, rgba(232, 111, 7, 0.35), transparent 46%),
        linear-gradient(160deg, #2b2828 0%, var(--dark) 55%, #201d1d 100%);
    z-index: 0;
}

/* faint giant "20" watermark behind the content */
.anos-hero-bg::before {
    content: "20";
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 42vw;
    font-weight: 700;
    line-height: 1;
    color: rgba(255, 255, 255, 0.03);
    letter-spacing: -0.05em;
    user-select: none;
    pointer-events: none;
}

.anos-hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    animation: anos-fade-up 1s ease both;
}

.anos-hero-logo {
    height: 3rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
}

.anos-hero-eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.5em;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--gray);
    padding-left: 0.5em; /* compensate letter-spacing */
    margin-bottom: 0.5rem;
}

.anos-hero-number {
    display: flex;
    align-items: baseline;
    gap: 0.15em;
    color: var(--white);
    line-height: 0.9;
    margin: 0.5rem 0 1.5rem;
}

.anos-hero-number .num {
    font-size: clamp(7rem, 24vw, 17rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    background: linear-gradient(180deg, #ffffff 0%, #ffd9b4 60%, var(--primary) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.anos-hero-number .unit {
    font-size: clamp(2rem, 7vw, 4.5rem);
    font-weight: 300;
    color: var(--white);
    text-transform: lowercase;
}

.anos-hero-tagline {
    max-width: 34rem;
    font-size: clamp(1.05rem, 2.4vw, 1.4rem);
    font-weight: 300;
    color: var(--gray);
    line-height: 1.5;
}

.anos-hero-scroll {
    margin-top: 3rem;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--white);
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    opacity: 0.85;
    transition: opacity 0.3s ease;
}

.anos-hero-scroll:hover {
    opacity: 1;
}

.anos-hero-scroll i {
    font-size: 1.1rem;
    color: var(--primary);
    animation: anos-bounce 1.8s ease-in-out infinite;
}

/* ---------- INTRO ---------- */

.anos-intro {
    width: 100%;
    background-color: var(--white);
    padding: 6rem 1.5rem 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.anos-intro h2 {
    color: var(--dark);
    font-weight: 600;
    font-size: clamp(1.5rem, 3.4vw, 2.35rem);
    line-height: 1.3;
    margin: 0.75rem 0 1.5rem;
    max-width: 46rem;
}

.anos-intro p {
    max-width: 42rem;
    color: var(--primary-text);
    font-size: 1.05rem;
    line-height: 1.7;
}

.anos-stats {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem 4rem;
    margin-top: 3.5rem;
}

.anos-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 8rem;
}

.anos-stat-num {
    font-size: clamp(2.75rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.anos-stat-label {
    margin-top: 0.5rem;
    font-size: 0.95rem;
    letter-spacing: 0.05em;
    color: var(--gray-2);
    text-transform: uppercase;
}

/* ---------- TIMELINE SECTION ---------- */

.anos-timeline-section {
    width: 100%;
    background-color: var(--gray);
    padding: 5rem 1.5rem 6rem;
    scroll-margin-top: 6rem;
}

.anos-section-heading {
    text-align: center;
    margin-bottom: 4rem;
}

.anos-section-heading h2 {
    color: var(--dark);
    font-weight: 700;
    font-size: clamp(1.9rem, 4vw, 2.8rem);
    margin-top: 0.5rem;
}

/* ---------- VERTICAL TIMELINE ---------- */

.vtimeline {
    position: relative;
    max-width: 68rem;
    margin: 0 auto;
    padding: 1rem 0;
}

/* central rail */
.vtimeline-line {
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    transform: translateX(-50%);
    background: rgba(54, 50, 50, 0.15);
    border-radius: 4px;
}

.vtimeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 0;
    background: linear-gradient(180deg, var(--primary), var(--primary-light));
    border-radius: 4px;
    transition: height 0.15s linear;
}

.milestone {
    position: relative;
    width: 50%;
    padding: 1.5rem 3.25rem;
    box-sizing: border-box;
    opacity: 0;
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.milestone[data-side="left"] {
    left: 0;
    text-align: right;
    transform: translateX(-45px);
}

.milestone[data-side="right"] {
    left: 50%;
    text-align: left;
    transform: translateX(45px);
}

.milestone.in-view {
    opacity: 1;
    transform: translateX(0);
}

/* marker on the rail */
.milestone-marker {
    position: absolute;
    top: 1.75rem;
    width: 4rem;
    height: 4rem;
    border-radius: 50%;
    background: var(--white);
    border: 3px solid rgba(54, 50, 50, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
    transition: border-color 0.5s ease, background-color 0.5s ease, box-shadow 0.5s ease;
}

.milestone[data-side="left"] .milestone-marker {
    right: -2rem;
    transform: translateX(50%);
}

.milestone[data-side="right"] .milestone-marker {
    left: -2rem;
    transform: translateX(-50%);
}

.milestone-marker img {
    height: 1.9rem;
    width: 1.9rem;
    object-fit: contain;
    opacity: 0.6;
    transition: filter 0.5s ease, opacity 0.5s ease;
}

.milestone.in-view .milestone-marker {
    background: var(--primary);
    border-color: var(--primary);
    box-shadow: 0 0 0 6px rgba(232, 111, 7, 0.15);
}

.milestone.in-view .milestone-marker img {
    /* recolour the grey line icon to white */
    filter: brightness(0) invert(1);
    opacity: 1;
}

/* card */
.milestone-content {
    position: relative;
    background: var(--white);
    border-radius: 0.9rem;
    padding: 1.5rem 1.75rem;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
    display: inline-block;
    text-align: left;
    max-width: 100%;
}

/* little arrow connecting card to the rail */
.milestone-content::before {
    content: "";
    position: absolute;
    top: 1.9rem;
    width: 0;
    height: 0;
    border: 0.7rem solid transparent;
}

.milestone[data-side="left"] .milestone-content::before {
    right: -1.35rem;
    border-left-color: var(--white);
}

.milestone[data-side="right"] .milestone-content::before {
    left: -1.35rem;
    border-right-color: var(--white);
}

.milestone-year {
    display: inline-block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    letter-spacing: 0.02em;
}

.milestone-content h3 {
    color: var(--dark);
    font-size: 1.2rem;
    font-weight: 600;
    margin: 0.35rem 0 0.6rem;
}

.milestone-content p {
    color: var(--primary-text);
    font-size: 0.98rem;
    line-height: 1.6;
    margin: 0;
}

/* ---------- FINALE MILESTONE ---------- */

.milestone-marker--finale {
    width: 5rem;
    height: 5rem;
    top: 1.25rem;
    background: linear-gradient(145deg, var(--primary), var(--primary-light));
    border-color: var(--primary);
    box-shadow: 0 0 0 8px rgba(232, 111, 7, 0.18);
}

.milestone-marker--finale span {
    color: var(--white);
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1;
}

.milestone.in-view .milestone-marker--finale {
    animation: anos-pulse 2.2s ease-in-out infinite;
}

.milestone-content--finale {
    background: linear-gradient(150deg, var(--dark) 0%, #2a2626 100%);
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.25);
}

.milestone-content--finale .milestone-year {
    color: var(--primary);
}

.milestone-content--finale h3 {
    color: var(--white);
}

.milestone-content--finale p {
    color: var(--gray);
}

.milestone[data-side="left"] .milestone-content--finale::before {
    border-left-color: var(--dark);
}

.milestone[data-side="right"] .milestone-content--finale::before {
    border-right-color: var(--dark);
}

/* ---------- CTA ---------- */

.anos-cta {
    width: 100%;
    padding: 5rem 1.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background-color: var(--primary);
}

.anos-cta h1 {
    color: var(--white);
    margin-bottom: 2.5rem;
    max-width: 34rem;
    font-size: clamp(1.6rem, 4vw, 2.2rem);
}

/* ---------- ANIMATIONS ---------- */

@keyframes anos-fade-up {
    from { opacity: 0; transform: translateY(30px); }
    to   { opacity: 1; transform: translateY(0); }
}

@keyframes anos-bounce {
    0%, 100% { transform: translateY(0); }
    50%      { transform: translateY(8px); }
}

@keyframes anos-pulse {
    0%, 100% { box-shadow: 0 0 0 8px rgba(232, 111, 7, 0.18); }
    50%      { box-shadow: 0 0 0 16px rgba(232, 111, 7, 0.05); }
}

/* ---------- RESPONSIVE ---------- */

@media only screen and (max-width: 768px) {
    header.anos-hero {
        min-height: 80vh;
    }

    .anos-intro {
        padding: 4rem 1.25rem 3rem;
    }

    .anos-timeline-section {
        padding: 4rem 1rem 4.5rem;
    }

    .anos-section-heading {
        margin-bottom: 2.5rem;
    }

    /* rail moves to the left; every card stacks to its right */
    .vtimeline-line {
        left: 1.75rem;
    }

    .milestone,
    .milestone[data-side="left"],
    .milestone[data-side="right"] {
        width: 100%;
        left: 0;
        text-align: left;
        padding: 1rem 0.25rem 1rem 4.75rem;
        transform: translateY(35px);
    }

    .milestone.in-view {
        transform: translateY(0);
    }

    .milestone[data-side="left"] .milestone-marker,
    .milestone[data-side="right"] .milestone-marker {
        left: 1.75rem;
        right: auto;
        transform: translateX(-50%);
    }

    .milestone[data-side="left"] .milestone-content::before,
    .milestone[data-side="right"] .milestone-content::before {
        left: -1.35rem;
        right: auto;
        border-left-color: transparent;
        border-right-color: var(--white);
    }

    .milestone[data-side="left"] .milestone-content--finale::before,
    .milestone[data-side="right"] .milestone-content--finale::before {
        border-right-color: var(--dark);
    }

    .milestone-content {
        display: block;
    }

    .milestone-marker--finale {
        width: 4.25rem;
        height: 4.25rem;
    }
}

@media only screen and (max-width: 480px) {
    .anos-hero-logo {
        height: 2.5rem;
        margin-bottom: 2rem;
    }

    .anos-hero-eyebrow {
        letter-spacing: 0.35em;
        font-size: 0.75rem;
    }

    .anos-stats {
        gap: 2rem;
    }

    .milestone {
        padding-left: 4.25rem;
    }
}

/* Respect reduced-motion preferences */
@media (prefers-reduced-motion: reduce) {
    .milestone,
    .milestone[data-side="left"],
    .milestone[data-side="right"] {
        opacity: 1 !important;
        transform: none !important;
        transition: none !important;
    }

    .anos-hero-content,
    .anos-hero-scroll i,
    .milestone.in-view .milestone-marker--finale {
        animation: none !important;
    }
}