/* ==========================================================
   PROJECT RED — Estilos base compartidos
========================================================== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --red:            #E10600;
    --red-dark:       #A80400;
    --red-light:      #FF3B30;
    --red-glow:       rgba(225, 6, 0, 0.55);
    --red-soft:       rgba(225, 6, 0, 0.12);

    --bg:             #0A0A0C;
    --bg-soft:        #131316;
    --bg-card:        #1A1A1F;
    --border:         rgba(255, 255, 255, 0.08);
    --border-strong:  rgba(255, 255, 255, 0.15);

    --text:           #FFFFFF;
    --text-dim:       #A0A0AA;
    --text-dimmer:    #5C5C66;

    --success:        #22C55E;
    --warning:        #F59E0B;
    --danger:         #EF4444;

    --radius-sm:      10px;
    --radius:         18px;
    --radius-lg:      28px;

    --ease:           cubic-bezier(0.22, 1, 0.36, 1);
    --ease-bounce:    cubic-bezier(0.34, 1.56, 0.64, 1);
}

html { /*scroll-behavior: smooth;*/ -webkit-text-size-adjust: 100%; }

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100dvh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Fondo aurora compartido */
.bg-aurora {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}
.bg-aurora::before,
.bg-aurora::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
}
.bg-aurora::before {
    width: 55vmax; height: 55vmax;
    background: radial-gradient(circle, var(--red) 0%, transparent 70%);
    top: -22vmax; left: -18vmax;
    animation: float1 18s ease-in-out infinite;
}
.bg-aurora::after {
    width: 45vmax; height: 45vmax;
    background: radial-gradient(circle, #8B0000 0%, transparent 70%);
    bottom: -18vmax; right: -14vmax;
    animation: float2 22s ease-in-out infinite;
}
@keyframes float1 { 0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(7vmax,5vmax) scale(1.12);} }
@keyframes float2 { 0%,100%{transform:translate(0,0) scale(1);} 50%{transform:translate(-5vmax,-7vmax) scale(1.18);} }

.bg-noise {
    position: fixed; inset: 0; z-index: -1;
    pointer-events: none; opacity: 0.035;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* Botones */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 600;
    padding: 12px 22px;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: transform 0.15s var(--ease-bounce), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
    white-space: nowrap;
    user-select: none;
    position: relative;
    overflow: hidden;
}
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn-primary {
    background: linear-gradient(135deg, var(--red-light), var(--red));
    color: white;
    box-shadow: 0 8px 24px -8px var(--red-glow), inset 0 1px 0 rgba(255,255,255,0.2);
}
.btn-primary:hover:not(:disabled) {
    box-shadow: 0 12px 32px -8px var(--red-glow), inset 0 1px 0 rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--text);
    border: 1px solid var(--border-strong);
}
.btn-ghost:hover { background: var(--bg-soft); border-color: rgba(255,255,255,0.3); }

.btn-lg { font-size: 1.02rem; padding: 15px 28px; border-radius: 14px; }
.btn-block { width: 100%; }

/* Logo */
.logo {
    display: flex; align-items: center; gap: 10px;
    font-weight: 800; font-size: 1.15rem;
    letter-spacing: -0.02em;
    text-decoration: none; color: var(--text);
    user-select: none;
}
.logo-mark {
    width: 34px; height: 34px;
    border-radius: 11px;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    display: grid; place-items: center;
    box-shadow: 0 0 24px var(--red-glow), inset 0 0 12px rgba(255,255,255,0.2);
    position: relative; overflow: hidden;
}
.logo-mark::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.35) 50%, transparent 70%);
    transform: translateX(-100%);
    animation: shine 3.5s ease-in-out infinite;
}
@keyframes shine { 0%,60%{transform:translateX(-100%);} 100%{transform:translateX(100%);} }
.logo-mark svg { width: 18px; height: 18px; fill: white; position: relative; z-index: 1; }

/* Animaciones utilitarias */
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
.animate-fade-up { animation: fadeUp 0.7s var(--ease) both; }

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%      { transform: translateX(-6px); }
    40%      { transform: translateX(6px); }
    60%      { transform: translateX(-4px); }
    80%      { transform: translateX(4px); }
}
.shake { animation: shake 0.4s ease-in-out; }

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