/* =========================================================
   DD LAB UI
   Shared design system for DD Tech Labs
========================================================= */

/* -------------------------
   Design tokens
------------------------- */

:root {
    --dd-bg: #080a0f;
    --dd-bg-soft: #10141c;
    --dd-panel: #151b25;
    --dd-panel-glass: rgba(21, 27, 37, 0.82);

    --dd-text: #ffffff;
    --dd-text-muted: #a5adba;
    --dd-text-dark: #050705;

    --dd-accent: #39ff14;
    --dd-accent-hover: #63ff48;
    --dd-accent-soft: rgba(57, 255, 20, 0.1);

    --dd-danger: #ff4d4d;
    --dd-warning: #ffd60a;
    --dd-info: #00d5ff;
    --dd-purple: #b56cff;

    --dd-border: rgba(255, 255, 255, 0.1);
    --dd-border-accent: rgba(57, 255, 20, 0.3);

    --dd-radius-xs: 8px;
    --dd-radius-sm: 12px;
    --dd-radius-md: 18px;
    --dd-radius-lg: 28px;
    --dd-radius-xl: 36px;
    --dd-radius-pill: 999px;

    --dd-shadow-sm: 0 10px 28px rgba(0, 0, 0, 0.22);
    --dd-shadow-md: 0 20px 55px rgba(0, 0, 0, 0.34);
    --dd-shadow-lg: 0 30px 90px rgba(0, 0, 0, 0.48);

    --dd-content-width: 1240px;

    --dd-transition-fast: 160ms ease;
    --dd-transition: 220ms ease;
    --dd-transition-slow: 500ms ease;
}

/* -------------------------
   Containers and sections
------------------------- */

.dd-container {
    width: min(calc(100% - 40px), var(--dd-content-width));
    margin-inline: auto;
}

.dd-section {
    padding-block: 100px;
}

.dd-section-sm {
    padding-block: 60px;
}

.dd-section-lg {
    padding-block: 140px;
}

.dd-grid {
    display: grid;
    gap: 20px;
}

.dd-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.dd-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.dd-grid-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* -------------------------
   Buttons
------------------------- */

.dd-btn {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 11px 18px;
    border: 1px solid transparent;
    border-radius: var(--dd-radius-sm);
    cursor: pointer;
    font-weight: 800;
    text-decoration: none;
    transition:
        transform var(--dd-transition-fast),
        background var(--dd-transition-fast),
        border-color var(--dd-transition-fast),
        box-shadow var(--dd-transition-fast),
        color var(--dd-transition-fast);
}

.dd-btn:hover {
    transform: translateY(-2px);
}

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

.dd-btn-primary {
    color: var(--dd-text-dark);
    background: var(--dd-accent);
    box-shadow: 0 12px 30px rgba(57, 255, 20, 0.16);
}

.dd-btn-primary:hover {
    background: var(--dd-accent-hover);
    box-shadow: 0 18px 42px rgba(57, 255, 20, 0.26);
}

.dd-btn-secondary {
    color: var(--dd-text);
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--dd-border);
}

.dd-btn-secondary:hover {
    border-color: var(--dd-border-accent);
}

.dd-btn-danger {
    color: #ffffff;
    background: var(--dd-danger);
}

.dd-btn-warning {
    color: #151515;
    background: var(--dd-warning);
}

.dd-btn-ghost {
    color: var(--dd-text-muted);
    background: transparent;
}

.dd-btn-ghost:hover {
    color: var(--dd-accent);
    background: var(--dd-accent-soft);
}

.dd-btn-pill {
    border-radius: var(--dd-radius-pill);
}

.dd-btn-full {
    width: 100%;
}

/* -------------------------
   Cards and panels
------------------------- */

.dd-card {
    padding: 24px;
    border: 1px solid var(--dd-border);
    border-radius: var(--dd-radius-lg);
    background: var(--dd-panel);
    box-shadow: var(--dd-shadow-sm);
}

.dd-card-glass {
    background: var(--dd-panel-glass);
    backdrop-filter: blur(18px);
}

.dd-card-hover {
    transition:
        transform var(--dd-transition),
        border-color var(--dd-transition),
        box-shadow var(--dd-transition);
}

.dd-card-hover:hover {
    transform: translateY(-7px);
    border-color: var(--dd-border-accent);
    box-shadow: var(--dd-shadow-md);
}

.dd-card-glow {
    box-shadow:
        var(--dd-shadow-md),
        0 0 40px rgba(57, 255, 20, 0.07);
}

.dd-panel {
    padding: 28px;
    border: 1px solid var(--dd-border);
    border-radius: var(--dd-radius-xl);
    background:
        radial-gradient(
            circle at top left,
            rgba(57, 255, 20, 0.06),
            transparent 35%
        ),
        var(--dd-panel-glass);
    box-shadow: var(--dd-shadow-lg);
}

/* -------------------------
   Badges and statuses
------------------------- */

.dd-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 6px 10px;
    border-radius: var(--dd-radius-pill);
    font-size: 0.7rem;
    font-weight: 900;
    letter-spacing: 0.04em;
}

.dd-badge-active {
    color: var(--dd-accent);
    background: rgba(57, 255, 20, 0.09);
}

.dd-badge-warning {
    color: var(--dd-warning);
    background: rgba(255, 214, 10, 0.09);
}

.dd-badge-info {
    color: var(--dd-info);
    background: rgba(0, 213, 255, 0.09);
}

.dd-badge-experimental {
    color: var(--dd-purple);
    background: rgba(181, 108, 255, 0.09);
}

.dd-badge-danger {
    color: #ff8585;
    background: rgba(255, 77, 77, 0.09);
}

.dd-status-dot {
    width: 8px;
    height: 8px;
    flex: 0 0 auto;
    border-radius: 50%;
    background: currentColor;
    box-shadow: 0 0 12px currentColor;
}

/* -------------------------
   Typography helpers
------------------------- */

.dd-eyebrow {
    margin-bottom: 12px;
    color: var(--dd-accent);
    font-size: 0.76rem;
    font-weight: 900;
    letter-spacing: 0.18em;
    text-transform: uppercase;
}

.dd-heading-xl {
    font-size: clamp(3.4rem, 8vw, 7.6rem);
    line-height: 0.9;
    letter-spacing: -0.065em;
}

.dd-heading-lg {
    font-size: clamp(2.3rem, 5vw, 4.8rem);
    line-height: 1.03;
    letter-spacing: -0.045em;
}

.dd-heading-md {
    font-size: clamp(1.7rem, 3vw, 2.7rem);
    line-height: 1.08;
}

.dd-accent-text {
    color: var(--dd-accent);
}

.dd-muted {
    color: var(--dd-text-muted);
}

/* -------------------------
   Forms
------------------------- */

.dd-form {
    display: grid;
    gap: 16px;
}

.dd-field {
    display: grid;
    gap: 7px;
}

.dd-field label,
.dd-label {
    color: #dce2ea;
    font-size: 0.84rem;
    font-weight: 700;
}

.dd-input {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid var(--dd-border);
    border-radius: var(--dd-radius-sm);
    outline: none;
    color: var(--dd-text);
    background: rgba(4, 6, 9, 0.72);
    transition:
        border-color var(--dd-transition-fast),
        box-shadow var(--dd-transition-fast);
}

.dd-input:focus {
    border-color: var(--dd-accent);
    box-shadow: 0 0 0 3px var(--dd-accent-soft);
}

textarea.dd-input {
    resize: vertical;
}

select.dd-input option {
    color: #ffffff;
    background: #10151d;
}

/* -------------------------
   Alerts
------------------------- */

.dd-alert {
    padding: 14px 16px;
    border: 1px solid var(--dd-border);
    border-radius: var(--dd-radius-sm);
    background: rgba(255, 255, 255, 0.03);
}

.dd-alert-success {
    border-color: rgba(57, 255, 20, 0.25);
    color: var(--dd-accent);
    background: rgba(57, 255, 20, 0.06);
}

.dd-alert-warning {
    border-color: rgba(255, 214, 10, 0.25);
    color: var(--dd-warning);
    background: rgba(255, 214, 10, 0.06);
}

.dd-alert-danger {
    border-color: rgba(255, 77, 77, 0.25);
    color: #ff8585;
    background: rgba(255, 77, 77, 0.06);
}

/* -------------------------
   Dividers
------------------------- */

.dd-divider {
    width: 100%;
    height: 1px;
    border: 0;
    background: var(--dd-border);
}

.dd-divider-accent {
    height: 2px;
    background:
        linear-gradient(
            90deg,
            var(--dd-accent),
            transparent
        );
}

/* -------------------------
   Loading indicators
------------------------- */

.dd-spinner {
    width: 34px;
    height: 34px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--dd-accent);
    border-radius: 50%;
    animation: ddSpin 800ms linear infinite;
}

.dd-progress {
    width: 100%;
    height: 5px;
    overflow: hidden;
    border-radius: var(--dd-radius-pill);
    background: rgba(255, 255, 255, 0.07);
}

.dd-progress-bar {
    width: 50%;
    height: 100%;
    border-radius: inherit;
    background: var(--dd-accent);
    box-shadow: 0 0 16px rgba(57, 255, 20, 0.7);
}

/* -------------------------
   Animation helpers
------------------------- */

.dd-reveal {
    opacity: 0;
    transform: translateY(24px);
    transition:
        opacity 700ms ease,
        transform 700ms ease;
}

.dd-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.dd-float {
    animation: ddFloat 4s ease-in-out infinite;
}

.dd-pulse {
    animation: ddPulse 2s ease-in-out infinite;
}

.dd-glow {
    animation: ddGlow 2.5s ease-in-out infinite;
}

.dd-delay-1 {
    transition-delay: 100ms;
}

.dd-delay-2 {
    transition-delay: 200ms;
}

.dd-delay-3 {
    transition-delay: 300ms;
}

.dd-delay-4 {
    transition-delay: 400ms;
}

/* -------------------------
   Utility classes
------------------------- */

.dd-text-center {
    text-align: center;
}

.dd-flex {
    display: flex;
}

.dd-flex-wrap {
    flex-wrap: wrap;
}

.dd-items-center {
    align-items: center;
}

.dd-justify-between {
    justify-content: space-between;
}

.dd-gap-sm {
    gap: 10px;
}

.dd-gap-md {
    gap: 18px;
}

.dd-gap-lg {
    gap: 28px;
}

.dd-hidden {
    display: none !important;
}

/* -------------------------
   Keyframes
------------------------- */

@keyframes ddSpin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes ddFloat {
    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

@keyframes ddPulse {
    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.65;
        transform: scale(1.05);
    }
}

@keyframes ddGlow {
    0%,
    100% {
        box-shadow: 0 0 14px rgba(57, 255, 20, 0.12);
    }

    50% {
        box-shadow: 0 0 34px rgba(57, 255, 20, 0.3);
    }
}

/* -------------------------
   Responsive
------------------------- */

@media (max-width: 900px) {
    .dd-grid-3,
    .dd-grid-4 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 650px) {
    .dd-container {
        width: min(calc(100% - 28px), var(--dd-content-width));
    }

    .dd-section {
        padding-block: 72px;
    }

    .dd-section-lg {
        padding-block: 96px;
    }

    .dd-grid-2,
    .dd-grid-3,
    .dd-grid-4 {
        grid-template-columns: 1fr;
    }

    .dd-btn-mobile-full {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}