/* ================================================================
   css/styles.css — Espacio Limpio Ltda.
   Estilos corporativos unificados: Slate & Blue
   ================================================================ */

:root {
    --color-primary:   #6EC1E4;
    --color-secondary: #55A8CC;
    --color-accent:    #EBF6FB;

    --color-dark:      #0f172a;
    --color-light:     #ffffff;
    --color-mid:       #f8fafc;
    --color-border:    #e2e8f0;

    --font-display: 'Montserrat', sans-serif;
    --font-body: 'Nunito Sans', sans-serif;

    --shadow-soft: 0 4px 6px -1px rgba(0,0,0,.05), 0 2px 4px -1px rgba(0,0,0,.03);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,.1), 0 10px 10px -5px rgba(0,0,0,.04);

    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html { scroll-behavior: smooth; }

body {
    background-color: var(--color-mid);
    color: var(--color-dark);
    font-family: var(--font-body);
    overflow-x: hidden;
}

/* NAVBAR */
nav#navbar { background: transparent; border-bottom: 1px solid transparent; }
nav#navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-soft);
}

.navbar-logo { background: var(--color-primary); transition: transform 0.2s ease; }
.navbar-logo:hover { transform: scale(1.05); }

.navbar-brand { color: var(--color-dark); transition: color 0.3s ease; }
nav#navbar:not(.scrolled) .navbar-brand.text-on-dark { color: var(--color-light); }
nav#navbar:not(.scrolled) .nav-link.text-on-dark { color: rgba(255, 255, 255, 0.9); }

.nav-link { color: var(--color-dark); font-weight: 500; transition: color 0.2s ease; }
.nav-link:hover { color: var(--color-primary); }

.btn-cta-nav { background: var(--color-primary); color: white; transition: all 0.2s ease; }
.btn-cta-nav:hover { background: #55A8CC; transform: translateY(-1px); box-shadow: 0 6px 15px rgba(37, 99, 235, 0.25); }

/* WIDGETS Y FORMULARIOS */
.form-label { color: #475569; letter-spacing: 0.01em; }

.form-input, .form-select {
    background: #ffffff;
    border: 1px solid #cbd5e1;
    color: var(--color-dark);
    appearance: none;
    -webkit-appearance: none;
    transition: all 0.2s ease;
}
.form-input:hover, .form-select:hover { border-color: #94a3b8; }
.form-input:focus, .form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(110, 193, 228, 0.25);
    outline: none;
}
.form-input::placeholder { color: #94a3b8; }

.form-select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%230f172a' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 36px;
}
input[type="date"], input[type="time"] { color-scheme: light; }
input[type="file"]::file-selector-button {
    background-color: #EBF6FB;
    color: #6EC1E4;
    border: 0;
    padding: 8px 16px;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    margin-right: 12px;
}
input[type="file"]::file-selector-button:hover { background-color: #55A8CC; color: white; }

.btn-submit { background: var(--color-primary); transition: all 0.2s ease; }
.btn-submit:hover:not(:disabled) {
    background: var(--color-secondary);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(110, 193, 228, 0.35);
}
.btn-submit:active:not(:disabled) { transform: translateY(0); }

/* FOOTER */
.footer-section { background: linear-gradient(135deg, #6EC1E4 0%, #55A8CC 100%); color: rgba(255,255,255,0.95); }
.footer-logo { background: rgba(255,255,255,0.15); color: white; backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.2); }
.footer-section a { color: rgba(255,255,255,0.95); text-decoration: none; transition: all 0.3s ease; }
.footer-section a:hover { color: #0f172a; transform: translateX(3px); }

/* ANIMACIONES GLOBALES REVEAL */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s cubic-bezier(0.5, 0, 0, 1), transform 0.6s cubic-bezier(0.5, 0, 0, 1);
}
.reveal.active { opacity: 1; transform: translateY(0); }
.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }

/* ESTILOS DE DESPLAZAMIENTO Y UI GLOBAL */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-mid); }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #6EC1E4; }
::selection { background: rgba(110, 193, 228, 0.25); color: var(--color-dark); }
.modal-scroll::-webkit-scrollbar { width: 6px; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(24px); } to { opacity: 1; transform: translateY(0); } }
@keyframes spin { to { transform: rotate(360deg); } }

#success-message { animation: fadeInUp 0.5s ease forwards; }