/* =========================================================
    RESET & BASE
   ========================================================= */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Paleta Argentina */
    --celeste: #74ACDF;
    /* Celeste oficial */
    --celeste-dark: #4a87be;
    --celeste-light: #e8f4fd;
    --sol: #F6B40E;
    /* Sol de Mayo */
    --blanco: #FFFFFF;
    --azul-marino: #003087;
    /* Para acentos oscuros */

    /* Neutros */
    --color-text: #1a1a2e;
    --color-text-muted: #4a5568;
    --color-border: #E5E7EB;
    --color-border-err: #e74c3c;
    --color-border-foc: var(--celeste);
    --color-shadow-foc: rgba(116, 172, 223, 0.30);

    /* Layout */
    --sidebar-w: min(30vw, 300px);

    /* Tipografía */
    --font-display: 'Playfair Display', Georgia, serif;
    --font-body: 'Inter', system-ui, sans-serif;
}

html,
body {
    height: 100%;
}

body {
    display: flex;
    font-family: var(--font-body);
    color: var(--color-text);
    background: var(--blanco);
}


/* =========================================================
    SIDEBAR
   ========================================================= */
.sidebar {
    position: relative;
    flex: 0 0 var(--sidebar-w);
    min-height: 100vh;

    /* Foto de Buenos Aires desde Unsplash — crédito en .sidebar__credit */
    background-image: url('https://images.unsplash.com/photo-1589909202802-8f4aadce1849?w=700&q=80');
    background-size: cover;
    background-position: center top;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* Overlay con degradé celeste-azul de la bandera */
.sidebar__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,
            rgba(116, 172, 223, 0.72) 0%,
            rgba(0, 48, 135, 0.60) 100%);
}

.sidebar__logo-box {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.sidebar__escudo {
    width: 90px;
    filter: drop-shadow(0 4px 12px rgba(0, 0, 0, 0.45));
}

.sidebar__brand {
    font-family: var(--font-display);
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 900;
    color: var(--blanco);
    letter-spacing: 0.08em;
    text-shadow: 0 2px 14px rgba(0, 0, 0, 0.5);
}

.sidebar__subtitle {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.80);
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.sidebar__credit {
    position: absolute;
    bottom: 12px;
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    z-index: 1;
}

.sidebar__credit a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: underline;
}


/* =========================================================
    MAIN
   ========================================================= */
.main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 56px 64px;
    gap: 32px;
    min-height: 100vh;

    /* Franjas sutiles de la bandera como fondo */
    background:
        linear-gradient(180deg,
            var(--celeste-light) 0%,
            var(--blanco) 22%,
            var(--blanco) 78%,
            var(--celeste-light) 100%);
}


/* INTRO */
.intro__title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 900;
    line-height: 1.05;
    color: var(--color-text);
    margin-bottom: 14px;
}

/* Acento celeste en la última palabra del título */
.intro__title em {
    color: var(--celeste-dark);
    font-style: normal;
}

.intro__sub {
    font-size: 0.97rem;
    color: var(--color-text-muted);
    line-height: 1.65;
    max-width: 400px;
}

.intro__sub em {
    font-style: italic;
    color: var(--celeste-dark);
    font-weight: 500;
}


/* FORM CARD */
.form-card {
    background: var(--blanco);
    border-radius: 14px;
    padding: 36px 44px;
    max-width: 700px;

    /* Sombra con tinte celeste */
    box-shadow:
        0 2px 0 0 var(--celeste),
        /* tope celeste */
        0 8px 32px rgba(0, 48, 135, 0.10);
}

.form-card__heading {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-text-muted);
    margin-bottom: 26px;
}


/* FORM LAYOUT */
.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px 24px;
    margin-bottom: 18px;
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form__label {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
}

.form__input {
    height: 44px;
    padding: 0 14px;
    border: 1.5px solid var(--color-border);
    border-radius: 7px;
    font-size: 0.93rem;
    font-family: var(--font-body);
    color: var(--color-text);
    background: #fff;
    transition: border-color 0.15s, box-shadow 0.15s;
    outline: none;
}

/* Focus — borde celeste + sombra suave */
.form__input:focus {
    border-color: var(--color-border-foc);
    box-shadow: 0 0 0 3px var(--color-shadow-foc);
}

/* Password inválido — borde rojo (:user-invalid) */
.form__input--password:user-invalid {
    border-color: var(--color-border-err);
}

/* Fallback para browsers sin :user-invalid */
.form__input--password:not(:placeholder-shown):invalid {
    border-color: var(--color-border-err);
}


/* BOTÓN */
.btn-create {
    display: inline-block;
    margin-top: 10px;
    padding: 13px 32px;
    background: var(--celeste);
    color: var(--blanco);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.18s, transform 0.12s, box-shadow 0.18s;
    box-shadow: 0 4px 14px rgba(116, 172, 223, 0.45);
}

.btn-create:hover {
    background: var(--celeste-dark);
    box-shadow: 0 6px 20px rgba(116, 172, 223, 0.55);
}

.btn-create:active {
    transform: scale(0.98);
}


/* LOGIN PROMPT */
.login-prompt {
    font-size: 0.88rem;
    color: var(--color-text-muted);
}

.login-prompt__link {
    color: var(--celeste-dark);
    font-weight: 700;
    text-decoration: none;
}

.login-prompt__link:hover {
    text-decoration: underline;
}