/* ============================================================
   MICHLOR — Services Section CSS
   Klasy: .msrv (michlor-services)
   ============================================================ */

/* ── Sekcja ──────────────────────────────────────────────── */
.msrv {
    position:         relative;
    background-color: var(--color-bg-deep);
    padding:          var(--space-lg) 0;
    overflow:         hidden;
}

/* Dekoracyjny separator od hero */
.msrv::before {
    content:    '';
    position:   absolute;
    top:        0;
    left:       0;
    right:      0;
    height:     1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--color-accent) 30%,
        var(--color-accent) 70%,
        transparent 100%
    );
    opacity: 0.2;
}

.msrv__inner {
    max-width: 1280px;
    margin:    0 auto;
    padding:   0 clamp(1.5rem, 4vw, 3rem);
}

/* ── Nagłówek sekcji ─────────────────────────────────────── */
.msrv__head {
    text-align:    center;
    margin-bottom: clamp(3rem, 5vw, 5rem);
}

.msrv__overline {
    display:        inline-block;
    font-family:    var(--font-body);
    font-size:      0.72rem;
    font-weight:    500;
    letter-spacing: var(--letter-overline);
    text-transform: uppercase;
    color:          var(--color-accent);
    margin-bottom:  1rem;
    padding:        0.35rem 0.875rem;
    border:         1px solid var(--glass-border);
    border-radius:  var(--radius-pill);
    background:     var(--glass-bg);
}

.msrv__title {
    font-family:    var(--font-heading);
    font-size:      clamp(2rem, 4vw, 3rem);
    font-weight:    800;
    letter-spacing: var(--letter-heading);
    color:          var(--color-text);
    line-height:    1.15;
    margin:         0 0 1rem;
}

.msrv__title-em {
    font-style:              italic;
    background:              linear-gradient(135deg, var(--color-accent) 0%, #0EA5E9 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip:         text;
}

.msrv__sub {
    font-size:   1rem;
    color:       var(--color-muted);
    max-width:   480px;
    margin:      0 auto;
    line-height: var(--line-height-body);
}

/* ── Grid kart 3+3 ───────────────────────────────────────── */
.msrv__grid {
    display:               grid;
    grid-template-columns: repeat(3, 1fr);
    gap:                   1.5rem;
}

/* ── Karta — kontener flip ───────────────────────────────── */
.msrv__card {
    perspective: 1200px;
    height:      360px;
    cursor:      pointer;
}

/* Wewnętrzny element — obraca się */
.msrv__card-inner {
    position:           relative;
    width:              100%;
    height:             100%;
    transform-style:    preserve-3d;
    transition:         transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius:      var(--radius-md);
}

/* Flip na hover (desktop) */
@media (hover: hover) {
    .msrv__card:hover .msrv__card-inner {
        transform: rotateY(180deg);
    }
}

/* Flip na klasie (mobile/touch) */
.msrv__card.is-flipped .msrv__card-inner {
    transform: rotateY(180deg);
}

/* Wspólne style front i back */
.msrv__card-front,
.msrv__card-back {
    position:         absolute;
    inset:            0;
    border-radius:    var(--radius-md);
    -webkit-backface-visibility: hidden;
    backface-visibility:         hidden;
    display:          flex;
    flex-direction:   column;
    padding:          2rem;
    overflow:         hidden;
}

/* ── FRONT ───────────────────────────────────────────────── */
.msrv__card-front {
    background:  var(--color-bg-card);
    border:      1px solid rgba(255, 255, 255, 0.07);
    transition:  border-color var(--transition-base),
                 box-shadow   var(--transition-base);
}

.msrv__card-front::after {
    content:       '';
    position:      absolute;
    bottom:        0;
    left:          0;
    right:         0;
    height:        2px;
    background:    var(--card-color, var(--color-accent));
    transform:     scaleX(0);
    transform-origin: left;
    transition:    transform 0.4s ease;
}

.msrv__card:hover .msrv__card-front::after {
    transform: scaleX(1);
}

.msrv__card-icon {
    width:       48px;
    height:      48px;
    margin-bottom: 1.25rem;
    flex-shrink: 0;
}

.msrv__card-icon svg {
    width:  100%;
    height: 100%;
}

.msrv__card-tag {
    display:         inline-block;
    font-size:       0.7rem;
    font-weight:     500;
    letter-spacing:  0.1em;
    text-transform:  uppercase;
    color:           var(--card-color, var(--color-accent));
    margin-bottom:   0.75rem;
    opacity:         0.85;
}

.msrv__card-title {
    font-family:    var(--font-heading);
    font-size:      1.25rem;
    font-weight:    700;
    letter-spacing: var(--letter-heading);
    color:          var(--color-text);
    margin:         0 0 0.75rem;
    line-height:    1.2;
}

.msrv__card-teaser {
    font-size:   0.875rem;
    color:       var(--color-muted);
    line-height: 1.6;
    flex:        1;
    margin:      0;
}

.msrv__card-hint {
    display:     block;
    font-size:   0.72rem;
    color:       rgba(122, 155, 174, 0.5);
    margin-top:  1rem;
    transition:  color var(--transition-fast);
}

.msrv__card:hover .msrv__card-hint {
    color: var(--color-accent);
}

/* ── BACK ────────────────────────────────────────────────── */
.msrv__card-back {
    background:  linear-gradient(
                     135deg,
                     rgba(10, 37, 64, 0.98) 0%,
                     rgba(6, 26, 46, 0.98)  100%
                 );
    border:      1px solid var(--card-color, var(--color-accent));
    transform:   rotateY(180deg);
    box-shadow:  inset 0 0 60px rgba(0, 0, 0, 0.3),
                 0 0 40px rgba(0, 0, 0, 0.4);
    justify-content: space-between;
}

/* Gradient accent w rogu */
.msrv__card-back::before {
    content:       '';
    position:      absolute;
    top:           -40px;
    right:         -40px;
    width:         160px;
    height:        160px;
    border-radius: 50%;
    background:    radial-gradient(
                       circle,
                       var(--card-color, rgba(0, 180, 166, 0.25)) 0%,
                       transparent 70%
                   );
    filter:        blur(20px);
    opacity:       0.5;
    pointer-events: none;
}

.msrv__card-back-desc {
    font-size:   0.875rem;
    color:       var(--color-muted);
    line-height: 1.65;
    margin:      0 0 1.25rem;
    flex:        1;
}

.msrv__card-stats {
    display:   flex;
    gap:       1.5rem;
    padding:   1rem 0;
    border-top:    1px solid rgba(255, 255, 255, 0.06);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    margin-bottom: 1.25rem;
}

.msrv__card-stat {
    display:        flex;
    flex-direction: column;
    gap:            0.2rem;
}

.msrv__card-stat strong {
    font-family:    var(--font-heading);
    font-size:      1.25rem;
    font-weight:    800;
    color:          var(--card-color, var(--color-accent));
    letter-spacing: var(--letter-heading);
    line-height:    1;
}

.msrv__card-stat span {
    font-size:  0.7rem;
    color:      var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.msrv__card-cta {
    display:          inline-flex;
    align-items:      center;
    gap:              0.4rem;
    font-size:        0.875rem;
    font-weight:      500;
    color:            var(--card-color, var(--color-accent));
    text-decoration:  none;
    transition:       gap var(--transition-fast),
                      opacity var(--transition-fast);
}

.msrv__card-cta:hover {
    gap:     0.75rem;
    opacity: 0.85;
    color:   var(--card-color, var(--color-accent));
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 1024px) {
    .msrv__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .msrv__grid {
        grid-template-columns: 1fr;
    }

    .msrv__card {
        height: auto;
        perspective: none;
    }

    /* Na małych ekranach — brak flip, layout pionowy */
    .msrv__card-inner {
        transform-style: flat;
        transition:      none;
        height:          auto;
    }

    .msrv__card:hover .msrv__card-inner,
    .msrv__card.is-flipped .msrv__card-inner {
        transform: none;
    }

    .msrv__card-front,
    .msrv__card-back {
        position: static;
        transform: none;
        backface-visibility: visible;
        -webkit-backface-visibility: visible;
    }

    .msrv__card-back {
        border-top: none;
        border-radius: 0 0 var(--radius-md) var(--radius-md);
        padding-top: 1.25rem;
    }

    .msrv__card-front {
        border-radius: var(--radius-md) var(--radius-md) 0 0;
        border-bottom: none;
    }

    .msrv__card-hint {
        display: none;
    }
}