/* =============================================
   BLOG: ANIMACIONES FLUIDAS - INTERACTIVE DEMOS
   Apple-inspired glassmorphic interactive
   components with fluid micro-interactions.
   ============================================= */

/* --- Shared Demo Container --- */

.demo-container {
    position: relative;
    width: 100%;
    margin: 32px 0;
    padding: 28px;
    background:
        radial-gradient(ellipse at 30% 0%, rgba(122, 156, 255, 0.06), transparent 50%),
        radial-gradient(ellipse at 70% 100%, rgba(180, 130, 255, 0.04), transparent 50%),
        rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    overflow: hidden;
    backdrop-filter: blur(2px);
    transition: border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.demo-container:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

.demo-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(180, 205, 255, 0.2) 30%,
        rgba(180, 205, 255, 0.3) 50%,
        rgba(180, 205, 255, 0.2) 70%,
        transparent
    );
    pointer-events: none;
}

.demo-container::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(180, 205, 255, 0.03),
        transparent 40%
    );
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.demo-container:hover::after {
    opacity: 1;
}

.demo-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: rgba(180, 205, 255, 0.6);
    margin-bottom: 20px;
    padding: 5px 12px;
    background: rgba(180, 205, 255, 0.06);
    border: 1px solid rgba(180, 205, 255, 0.1);
    border-radius: 20px;
}

.demo-label::before {
    content: '';
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: rgba(180, 205, 255, 0.5);
    animation: labelPulse 2s ease-in-out infinite;
}

@keyframes labelPulse {
    0%, 100% { opacity: 0.4; transform: scale(0.8); }
    50%      { opacity: 1;   transform: scale(1); }
}

/* --- Timing Function Graph --- */

.timing-graph {
    position: relative;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.timing-graph__canvas {
    width: 100%;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius-lg);
    background:
        radial-gradient(ellipse at 50% 50%, rgba(10, 15, 30, 0.8), rgba(0, 0, 0, 0.4));
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.04),
        0 4px 24px rgba(0, 0, 0, 0.3);
    cursor: crosshair;
}

.timing-graph__controls {
    display: flex;
    gap: 6px;
    margin-top: 16px;
    flex-wrap: wrap;
    justify-content: center;
}

.timing-btn {
    position: relative;
    padding: 7px 14px;
    border-radius: 8px;
    font-size: 12px;
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text-tertiary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    cursor: pointer;
    overflow: hidden;
    transition:
        color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        background 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    user-select: none;
}

.timing-btn:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.07);
    transform: translateY(-1px);
}

.timing-btn:active {
    transform: translateY(0) scale(0.97);
}

.timing-btn--active {
    color: var(--text-primary);
    background: rgba(180, 205, 255, 0.12);
    border-color: rgba(180, 205, 255, 0.25);
    box-shadow: 0 0 20px rgba(180, 205, 255, 0.08);
}

.timing-btn--active::before {
    content: '';
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(135deg, rgba(180, 205, 255, 0.15), transparent 60%);
    pointer-events: none;
}

/* --- Ball Animation Preview --- */

.timing-ball-track {
    position: relative;
    width: 100%;
    height: 52px;
    margin-top: 20px;
    background:
        linear-gradient(90deg, rgba(180, 205, 255, 0.03), rgba(180, 205, 255, 0.06), rgba(180, 205, 255, 0.03));
    border-radius: 26px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    overflow: hidden;
}

.timing-ball-track::before {
    content: '';
    position: absolute;
    left: 12px;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(180, 205, 255, 0.2);
    transform: translateY(-50%);
}

.timing-ball-track::after {
    content: '';
    position: absolute;
    right: 12px;
    top: 50%;
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: rgba(180, 205, 255, 0.2);
    transform: translateY(-50%);
}

.timing-ball {
    position: absolute;
    top: 50%;
    left: 12px;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 35% 35%, rgba(220, 230, 255, 0.9), rgba(122, 156, 255, 0.6));
    box-shadow:
        0 2px 12px rgba(122, 156, 255, 0.4),
        0 0 30px rgba(122, 156, 255, 0.15),
        inset 0 -2px 4px rgba(0, 0, 0, 0.15);
    transform: translateY(-50%);
    will-change: left;
}

.timing-ball--animating {
    animation: ballSlide var(--ball-duration, 1.5s) var(--ball-timing, ease) forwards;
}

@keyframes ballSlide {
    from { left: 12px; }
    to   { left: calc(100% - 42px); }
}

/* --- Play Button --- */

.timing-play-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 16px auto 0;
    padding: 9px 24px;
    border-radius: 10px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.2px;
    color: var(--text-primary);
    background:
        linear-gradient(135deg, rgba(180, 205, 255, 0.12), rgba(130, 160, 255, 0.08));
    border: 1px solid rgba(180, 205, 255, 0.18);
    cursor: pointer;
    transition:
        background 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.timing-play-btn:hover {
    background:
        linear-gradient(135deg, rgba(180, 205, 255, 0.18), rgba(130, 160, 255, 0.12));
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 4px 20px rgba(122, 156, 255, 0.15);
    border-color: rgba(180, 205, 255, 0.28);
}

.timing-play-btn:active {
    transform: translateY(0) scale(0.98);
}

.timing-play-btn svg {
    width: 12px;
    height: 12px;
    filter: drop-shadow(0 0 4px rgba(180, 205, 255, 0.4));
}

/* --- Timing Function Code Display --- */

.timing-code {
    display: block;
    margin-top: 14px;
    padding: 12px 16px;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    font-family: var(--font-mono);
    font-size: 13px;
    color: rgba(180, 205, 255, 0.8);
    text-align: center;
    user-select: all;
    transition:
        color 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.3s ease;
}

.timing-code:hover {
    border-color: rgba(180, 205, 255, 0.15);
    color: rgba(200, 220, 255, 0.95);
}

/* --- Spring Playground --- */

.spring-playground {
    width: 100%;
    max-width: 580px;
    margin: 0 auto;
}

.spring-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 22px;
}

.spring-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 12px 14px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-md);
    transition:
        border-color 0.3s ease,
        background 0.3s ease;
}

.spring-control:hover {
    border-color: rgba(255, 255, 255, 0.1);
    background: rgba(255, 255, 255, 0.03);
}

.spring-control__label {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    letter-spacing: 0.3px;
}

.spring-control__value {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 700;
    color: rgba(180, 205, 255, 0.9);
    min-width: 40px;
    text-align: right;
    transition: color 0.3s ease;
}

.spring-control__slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 3px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.08);
    outline: none;
    cursor: pointer;
    transition: background 0.3s ease;
}

.spring-control:hover .spring-control__slider {
    background: rgba(255, 255, 255, 0.12);
}

.spring-control__slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background:
        radial-gradient(circle at 40% 35%, #dce2ff, #7a9cff);
    border: 2px solid rgba(255, 255, 255, 0.25);
    box-shadow:
        0 2px 8px rgba(122, 156, 255, 0.35),
        0 0 16px rgba(122, 156, 255, 0.12);
    cursor: grab;
    transition:
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.3s ease;
}

.spring-control__slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow:
        0 2px 12px rgba(122, 156, 255, 0.5),
        0 0 24px rgba(122, 156, 255, 0.2);
}

.spring-control__slider::-webkit-slider-thumb:active {
    cursor: grabbing;
    transform: scale(1.05);
}

.spring-control__slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: radial-gradient(circle at 40% 35%, #dce2ff, #7a9cff);
    border: 2px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 2px 8px rgba(122, 156, 255, 0.35);
    cursor: grab;
}

/* --- Spring Preview Canvas --- */

.spring-canvas-wrap {
    position: relative;
    width: 100%;
    aspect-ratio: 16 / 7;
    margin-bottom: 16px;
}

.spring-canvas {
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    background:
        radial-gradient(ellipse at 50% 50%, rgba(10, 15, 30, 0.8), rgba(0, 0, 0, 0.4));
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.04),
        0 4px 24px rgba(0, 0, 0, 0.3);
}

/* --- Spring Animated Object --- */

.spring-object-track {
    position: relative;
    width: 100%;
    height: 90px;
    margin-top: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.spring-object {
    width: 68px;
    height: 68px;
    display: flex;
    align-items: center;
    justify-content: center;
    will-change: transform, opacity;
    transition: box-shadow 0.5s ease;
}

.spring-object:hover {
    box-shadow:
        0 8px 32px rgba(0, 0, 0, 0.25),
        0 0 60px rgba(122, 156, 255, 0.12),
        inset 0 1px 2px rgba(255, 255, 255, 0.1);
}

.spring-object img {
    width: 700px;
    height: auto;
    pointer-events: none;
}
/* --- Spring Equation Display --- */

.spring-equation {
    margin-top: 20px;
    padding: 18px 20px;
    background:
        linear-gradient(135deg, rgba(0, 0, 0, 0.25), rgba(10, 15, 30, 0.2));
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-lg);
}

.spring-equation__title {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: rgba(180, 205, 255, 0.5);
    margin-bottom: 10px;
}

.spring-equation__formula {
    font-family: var(--font-mono);
    font-size: 13px;
    color: rgba(180, 205, 255, 0.75);
    line-height: 1.8;
    word-break: break-word;
    transition: color 0.4s ease;
}

.spring-equation__params {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    margin-top: 14px;
}

.spring-param {
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
    text-align: center;
    transition:
        border-color 0.3s ease,
        background 0.3s ease;
}

.spring-param:hover {
    border-color: rgba(180, 205, 255, 0.12);
    background: rgba(180, 205, 255, 0.04);
}

.spring-param__name {
    font-size: 9px;
    font-weight: 700;
    color: var(--text-tertiary);
    letter-spacing: 0.8px;
    text-transform: uppercase;
    margin-bottom: 4px;
}

.spring-param__value {
    font-family: var(--font-mono);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

/* --- Presets Table --- */

.spring-presets-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-top: 20px;
    font-size: 13px;
}

.spring-presets-table thead th {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.8px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    text-align: left;
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.spring-presets-table tbody tr {
    cursor: pointer;
    transition:
        background 0.4s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.spring-presets-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.04);
}

.spring-presets-table tbody tr:active {
    transform: scale(0.995);
}

.spring-presets-table tbody tr.active {
    background: rgba(180, 205, 255, 0.08);
    box-shadow: inset 3px 0 0 rgba(180, 205, 255, 0.4);
}

.spring-presets-table tbody td {
    padding: 11px 12px;
    color: var(--text-secondary);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    vertical-align: middle;
    transition: color 0.3s ease;
}

.spring-presets-table tbody tr:hover td {
    color: var(--text-primary);
}

.spring-presets-table tbody td:first-child {
    font-weight: 600;
    color: var(--text-primary);
}

.spring-presets-table tbody td:last-child {
    font-size: 12px;
    color: var(--text-tertiary);
    font-style: italic;
}

.preset-swatch {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
    box-shadow: 0 0 8px currentColor;
}

/* --- Interactive Example Boxes --- */

.anim-example {
    position: relative;
    width: 100%;
    padding: 36px 24px;
    margin: 28px 0;
    background:
        radial-gradient(ellipse at 50% 0%, rgba(122, 156, 255, 0.04), transparent 60%),
        rgba(255, 255, 255, 0.015);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.anim-example__title {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
    text-align: center;
    letter-spacing: -0.2px;
}

.anim-example__description {
    font-size: 14px;
    color: var(--text-tertiary);
    text-align: center;
    max-width: 440px;
    line-height: 1.6;
}

/* --- Hover Example Card --- */

.hover-card-demo {
    width: 180px;
    height: 110px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-tertiary);
    cursor: pointer;
    will-change: transform, box-shadow;
    position: relative;
    overflow: hidden;
}

.hover-card-demo::before {
    content: '';
    position: absolute;
    inset: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.hover-card-demo:hover::before {
    opacity: 1;
}

.hover-card-demo--linear {
    transition:
        transform 0.5s linear,
        box-shadow 0.5s linear,
        border-color 0.5s linear;
}

.hover-card-demo--spring {
    transition:
        transform 0.65s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.5s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.hover-card-demo:hover {
    transform: translateY(-8px) scale(1.03);
    color: var(--text-primary);
}

/* --- Side-by-side comparison --- */

.comparison-row {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.comparison-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.comparison-item__label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--text-tertiary);
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 12px;
}

.hover-card-demo img {
    width: 100px;
    height: 100px;
    object-fit: contain;
    pointer-events: none;
}

/* --- Steps() Animation Demo --- */

.steps-demo-strip {
    display: flex;
    gap: 4px;
    padding: 10px;
    background: rgba(0, 0, 0, 0.25);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    overflow-x: auto;
}

.steps-demo-frame {
    flex: 0 0 auto;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-tertiary);
    transition:
        background 0.3s cubic-bezier(0.16, 1, 0.3, 1),
        border-color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
        color 0.3s cubic-bezier(0.16, 1, 0.3, 1),
        transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.3s ease;
}

.steps-demo-frame--active {
    background: rgba(180, 205, 255, 0.15);
    border-color: rgba(180, 205, 255, 0.35);
    color: var(--text-primary);
    transform: translateY(-3px) scale(1.05);
    box-shadow:
        0 4px 16px rgba(122, 156, 255, 0.2),
        0 0 24px rgba(122, 156, 255, 0.08);
}

/* --- Exponential Decay Graph --- */

.decay-graph-wrap {
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

.decay-canvas {
    width: 100%;
    aspect-ratio: 2 / 1;
    border-radius: var(--radius-lg);
    background:
        radial-gradient(ellipse at 50% 50%, rgba(10, 15, 30, 0.8), rgba(0, 0, 0, 0.4));
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow:
        inset 0 1px 0 rgba(255, 255, 255, 0.04),
        0 4px 24px rgba(0, 0, 0, 0.3);
}

/* --- Responsive --- */

@media (max-width: 768px) {
    .demo-container {
        padding: 20px 16px;
        margin: 24px 0;
    }

    .spring-controls {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .spring-equation__params {
        grid-template-columns: 1fr 1fr;
    }

    .comparison-row {
        flex-direction: column;
        align-items: center;
    }

    .spring-presets-table {
        font-size: 12px;
    }

    .spring-presets-table thead th,
    .spring-presets-table tbody td {
        padding: 8px 8px;
    }

    .spring-presets-table tbody td:last-child {
        display: none;
    }

    .hover-card-demo {
        width: 160px;
        height: 96px;
    }
}

@media (max-width: 480px) {
    .timing-graph__controls {
        gap: 4px;
    }

    .timing-btn {
        padding: 5px 10px;
        font-size: 11px;
    }

    .spring-equation__params {
        grid-template-columns: 1fr 1fr;
    }

    .steps-demo-frame {
        width: 42px;
        height: 42px;
        font-size: 12px;
    }
}

  .info-box {
            background: rgba(99, 102, 241, 0.1);
            border-left: 4px solid #6366f1;
            padding: 16px 20px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
        }

        .info-box__title {
            font-weight: bold;
            color: #a5b4fc;
            margin-bottom: 8px;
        }