/* =========================================================
   VARIABLES GENERALES
   ========================================================= */

:root {
    --color-primary: #1565c0;
    --color-primary-dark: #0d47a1;
    --color-primary-light: #eaf3ff;

    --color-text: #172033;
    --color-text-soft: #64748b;

    --color-background: #f7f9fc;
    --color-surface: #ffffff;
    --color-border: #dfe7f1;

    --color-success: #22c55e;

    --shadow-soft:
        0 20px 60px rgba(15, 50, 90, 0.12);

    --radius-small: 10px;
    --radius-medium: 18px;
    --radius-large: 28px;

    --container-width: 1180px;
}


/* =========================================================
   REINICIO BÁSICO
   ========================================================= */

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

html {
    scroll-behavior: smooth;
}

body {
    background:
        linear-gradient(
            180deg,
            #f7fbff 0%,
            var(--color-background) 100%
        );

    color: var(--color-text);

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    line-height: 1.6;
}

a {
    color: inherit;
    text-decoration: none;
}


/* =========================================================
   CONTENEDOR
   ========================================================= */

.container {
    width: min(
        calc(100% - 40px),
        var(--container-width)
    );

    margin: 0 auto;
}


/* =========================================================
   CABECERA
   ========================================================= */

.main-header {
    position: sticky;
    top: 0;
    z-index: 100;

    background:
        rgba(255, 255, 255, 0.92);

    border-bottom:
        1px solid var(--color-border);

    backdrop-filter: blur(15px);
}

.header-content {
    min-height: 74px;

    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: baseline;
    gap: 6px;
}

.brand-name {
    color: var(--color-primary);

    font-size: 1.75rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.brand-subtitle {
    color: var(--color-text-soft);

    font-size: 0.9rem;
    font-weight: 600;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 25px;

    color: var(--color-text-soft);

    font-size: 0.95rem;
    font-weight: 600;
}

.main-nav a:hover {
    color: var(--color-primary);
}


/* =========================================================
   BOTONES
   ========================================================= */

.button {
    min-height: 48px;
    padding: 12px 24px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    background: var(--color-primary);
    color: #ffffff;

    border:
        1px solid var(--color-primary);

    border-radius: var(--radius-small);

    font-weight: 700;

    transition:
        transform 0.2s ease,
        background 0.2s ease,
        box-shadow 0.2s ease;
}

.button:hover {
    background: var(--color-primary-dark);
    color: #ffffff;

    transform: translateY(-2px);

    box-shadow:
        0 12px 25px rgba(21, 101, 192, 0.22);
}

.button-secondary {
    background: transparent;
    color: var(--color-primary);
}

.button-secondary:hover {
    background: var(--color-primary-light);
    color: var(--color-primary-dark);

    box-shadow: none;
}

.button-small {
    min-height: 40px;
    padding: 8px 16px;
}


/* =========================================================
   HERO
   ========================================================= */

.hero {
    padding: 95px 0 85px;
}

.hero-grid {
    display: grid;

    grid-template-columns:
        minmax(0, 1.15fr)
        minmax(360px, 0.85fr);

    align-items: center;
    gap: 70px;
}

.eyebrow {
    display: inline-block;

    margin-bottom: 16px;

    color: var(--color-primary);

    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 1.6px;
    text-transform: uppercase;
}

.hero h1 {
    max-width: 760px;

    font-size:
        clamp(2.6rem, 6vw, 5rem);

    line-height: 1.02;
    letter-spacing: -3px;
}

.hero-description {
    max-width: 700px;

    margin-top: 26px;

    color: var(--color-text-soft);

    font-size: 1.15rem;
}

.hero-actions {
    margin-top: 34px;

    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}

.hero-note {
    max-width: 650px;

    margin-top: 24px;
    padding-left: 16px;

    border-left:
        3px solid var(--color-primary);

    color: var(--color-text-soft);

    font-size: 0.94rem;
}


/* =========================================================
   TARJETA DE MIA
   ========================================================= */

.mia-card {
    padding: 28px;

    background:
        linear-gradient(
            150deg,
            #ffffff 0%,
            #f1f7ff 100%
        );

    border:
        1px solid var(--color-border);

    border-radius: var(--radius-large);

    box-shadow: var(--shadow-soft);
}

.mia-card-header {
    display: flex;
    align-items: center;
    gap: 14px;

    padding-bottom: 20px;

    border-bottom:
        1px solid var(--color-border);
}

.mia-avatar {
    width: 58px;
    height: 58px;

    display: flex;
    align-items: center;
    justify-content: center;

    background:
        linear-gradient(
            135deg,
            var(--color-primary),
            #4fa3ff
        );

    color: #ffffff;

    border-radius: 18px;

    font-size: 1.7rem;
    font-weight: 800;
}

.mia-card-header h2 {
    font-size: 1.25rem;
}

.mia-card-header p {
    color: var(--color-text-soft);
    font-size: 0.85rem;
}

.status-dot {
    width: 11px;
    height: 11px;

    margin-left: auto;

    background: var(--color-success);

    border-radius: 50%;

    box-shadow:
        0 0 0 6px rgba(34, 197, 94, 0.12);
}

.mia-message {
    margin: 24px 0;
    padding: 18px;

    background: var(--color-surface);

    border:
        1px solid var(--color-border);

    border-radius: var(--radius-medium);
}

.mia-message p:first-child {
    font-weight: 700;
}

.mia-summary {
    display: grid;
    gap: 12px;
}

.summary-item {
    padding: 14px 16px;

    display: flex;
    flex-direction: column;

    background:
        rgba(255, 255, 255, 0.74);

    border:
        1px solid var(--color-border);

    border-radius: var(--radius-small);
}

.summary-item span {
    color: var(--color-text-soft);
    font-size: 0.85rem;
}

.mia-input-preview {
    margin-top: 18px;
    padding: 14px 16px;

    background: #ffffff;
    color: #94a3b8;

    border:
        1px solid var(--color-border);

    border-radius: 999px;

    font-size: 0.9rem;
}


/* =========================================================
   SECCIONES
   ========================================================= */

.section {
    padding: 90px 0;
}

.section-muted {
    background:
        var(--color-primary-light);
}

.section-heading {
    max-width: 730px;
    margin-bottom: 45px;
}

.section-heading h2,
.context-grid h2 {
    font-size:
        clamp(2rem, 4vw, 3.2rem);

    line-height: 1.1;
    letter-spacing: -1.8px;
}

.section-text {
    margin-top: 20px;

    color: var(--color-text-soft);

    font-size: 1.05rem;
}


/* =========================================================
   FUNCIONES
   ========================================================= */

.feature-grid {
    display: grid;

    grid-template-columns:
        repeat(3, minmax(0, 1fr));

    gap: 22px;
}

.feature-card {
    padding: 30px;

    background: var(--color-surface);

    border:
        1px solid var(--color-border);

    border-radius: var(--radius-medium);

    box-shadow:
        0 12px 35px rgba(30, 60, 100, 0.06);
}

.feature-number {
    margin-bottom: 25px;

    color: var(--color-primary);

    font-size: 0.85rem;
    font-weight: 800;
}

.feature-card h3 {
    margin-bottom: 12px;

    font-size: 1.25rem;
}

.feature-card p {
    color: var(--color-text-soft);
}


/* =========================================================
   CONTEXTO
   ========================================================= */

.context-grid {
    display: grid;

    grid-template-columns:
        minmax(0, 0.9fr)
        minmax(0, 1.1fr);

    align-items: center;
    gap: 70px;
}

.conversation-example {
    padding: 28px;

    display: grid;
    gap: 14px;

    background:
        rgba(255, 255, 255, 0.75);

    border:
        1px solid rgba(21, 101, 192, 0.16);

    border-radius: var(--radius-large);
}

.message {
    max-width: 88%;

    padding: 14px 18px;

    border-radius: 16px;
}

.message-user {
    margin-left: auto;

    background: var(--color-primary);
    color: #ffffff;

    border-bottom-right-radius: 5px;
}

.message-mia {
    background: #ffffff;

    border:
        1px solid var(--color-border);

    border-bottom-left-radius: 5px;
}


/* =========================================================
   PIE DE PÁGINA
   ========================================================= */

.main-footer {
    padding: 30px 0;

    background: #0f172a;
    color: #cbd5e1;

    text-align: center;
    font-size: 0.88rem;
}


/* =========================================================
   RESPONSIVE
   ========================================================= */

@media (max-width: 900px) {

    .main-nav a:not(.button) {
        display: none;
    }

    .hero-grid,
    .context-grid {
        grid-template-columns: 1fr;
        gap: 45px;
    }

    .hero {
        padding-top: 65px;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 560px) {

    .container {
        width: min(
            calc(100% - 28px),
            var(--container-width)
        );
    }

    .brand-subtitle {
        display: none;
    }

    .main-nav {
        gap: 10px;
    }

    .hero h1 {
        letter-spacing: -2px;
    }

    .hero-actions {
        flex-direction: column;
    }

    .button {
        width: 100%;
    }

    .mia-card {
        padding: 20px;
    }
}
/* =========================================================
   AUTENTICACIÓN
   ========================================================= */

.auth-section {
    min-height: calc(100vh - 150px);
    padding: 70px 20px;

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

.auth-card {
    width: 100%;
    max-width: 470px;

    padding: 36px;

    background: var(--color-surface);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);

    box-shadow: var(--shadow-soft);
}

.auth-card-wide {
    max-width: 620px;
}

.auth-card h1 {
    font-size: 2.2rem;
    line-height: 1.1;
}

.auth-description {
    margin-top: 12px;
    margin-bottom: 28px;

    color: var(--color-text-soft);
}

.auth-form {
    display: grid;
    gap: 18px;
}

.form-group {
    display: grid;
    gap: 7px;
}

.form-group label {
    font-weight: 700;
}

.form-group input {
    width: 100%;
    min-height: 46px;

    padding: 10px 13px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-small);

    font-size: 1rem;
}

.form-group input:focus {
    outline: none;

    border-color: var(--color-primary);

    box-shadow:
        0 0 0 4px rgba(21, 101, 192, 0.10);
}

.form-help {
    color: var(--color-text-soft);
    font-size: 0.82rem;
}

.form-error {
    color: #b91c1c;
    font-size: 0.84rem;
}

.auth-button {
    width: 100%;
    margin-top: 5px;
}

.auth-link {
    margin-top: 22px;

    color: var(--color-text-soft);

    text-align: center;
}

.auth-link a {
    color: var(--color-primary);
    font-weight: 700;
}


/* =========================================================
   MENSAJES
   ========================================================= */

.messages-container {
    width: min(
        calc(100% - 40px),
        var(--container-width)
    );

    margin: 20px auto 0;
}

.system-message {
    padding: 13px 16px;

    background: #eef4ff;
    color: var(--color-primary-dark);

    border: 1px solid #bfd7ff;
    border-radius: var(--radius-small);
}

.system-message.success {
    background: #ecfdf5;
    color: #166534;
    border-color: #bbf7d0;
}

.system-message.error {
    background: #fef2f2;
    color: #991b1b;
    border-color: #fecaca;
}


/* =========================================================
   DASHBOARD
   ========================================================= */

.dashboard-section {
    min-height: calc(100vh - 145px);
    padding: 65px 0 90px;
}

.dashboard-welcome {
    max-width: 760px;
    margin-bottom: 38px;
}

.dashboard-welcome h1 {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    line-height: 1.05;
    letter-spacing: -2px;
}

.dashboard-welcome > p {
    margin-top: 12px;
    color: var(--color-text-soft);
    font-size: 1.2rem;
}

.dashboard-welcome .dashboard-question {
    margin-top: 4px;
    color: var(--color-text);
    font-size: 1.45rem;
    font-weight: 700;
}

.dashboard-grid {
    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        minmax(280px, 340px);
    align-items: start;
    gap: 28px;
}

.dashboard-chat {
    overflow: hidden;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);
    box-shadow: var(--shadow-soft);
}

.chat-header {
    padding: 22px 25px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--color-border);
}

.chat-header h2 {
    font-size: 1.2rem;
}

.chat-header p {
    color: var(--color-text-soft);
    font-size: 0.85rem;
}

.chat-content {
    min-height: 350px;
    padding: 28px;
    background:
        linear-gradient(
            180deg,
            #f8fbff 0%,
            #ffffff 100%
        );
}

.chat-form {
    padding: 18px;
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    border-top: 1px solid var(--color-border);
}

.chat-form input {
    width: 100%;
    min-height: 48px;
    padding: 12px 17px;
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 0.95rem;
}

.chat-form input:disabled {
    background: #f8fafc;
    color: #94a3b8;
}

.chat-form button:disabled {
    cursor: not-allowed;
    opacity: 0.65;
    transform: none;
}

.dashboard-sidebar {
    display: grid;
    gap: 16px;
}

.dashboard-card {
    padding: 24px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);
    box-shadow:
        0 10px 30px rgba(30, 60, 100, 0.06);
}

.dashboard-card h3 {
    margin-bottom: 8px;
    color: var(--color-primary);
    font-size: 1.05rem;
}

.dashboard-card p {
    color: var(--color-text-soft);
    font-size: 0.9rem;
}

.nav-user {
    color: var(--color-primary);
    font-size: 0.9rem;
    font-weight: 700;
}

@media (max-width: 850px) {

    .dashboard-grid {
        grid-template-columns: 1fr;
    }

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

@media (max-width: 650px) {

    .dashboard-sidebar {
        grid-template-columns: 1fr;
    }

    .chat-form {
        grid-template-columns: 1fr;
    }

    .chat-form .button {
        width: 100%;
    }

    .nav-user {
        display: none;
    }
}



/* =========================================================
   MIA STUDIO
   ========================================================= */

.studio-section {
    min-height: calc(100vh - 145px);
    padding: 65px 0 90px;
}

.studio-heading {
    margin-bottom: 38px;

    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
}

.studio-heading h1 {
    margin-top: 8px;

    font-size: clamp(2.7rem, 5vw, 4.7rem);
    line-height: 1;
    letter-spacing: -2.5px;
}

.studio-heading p {
    max-width: 680px;
    margin-top: 16px;

    color: var(--color-text-soft);

    font-size: 1.1rem;
}


/* =========================================================
   MEMBRESÍA
   ========================================================= */

.studio-membership {
    margin-bottom: 55px;
    padding: 34px;

    display: grid;
    grid-template-columns:
        minmax(0, 1fr)
        minmax(220px, 290px);
    gap: 35px;

    background:
        linear-gradient(
            135deg,
            #ffffff 0%,
            #edf5ff 100%
        );

    border: 1px solid var(--color-border);
    border-radius: var(--radius-large);

    box-shadow: var(--shadow-soft);
}

.studio-label {
    color: var(--color-primary);

    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 1.3px;
    text-transform: uppercase;
}

.studio-plan-row {
    margin-top: 12px;

    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
}

.studio-plan-row h2 {
    font-size: 2rem;
    line-height: 1.15;
}

.studio-plan-row p {
    max-width: 620px;
    margin-top: 8px;

    color: var(--color-text-soft);
}

.studio-plan-badge {
    padding: 7px 14px;

    background: #c88231;
    color: #ffffff;

    border-radius: 999px;

    font-size: 0.8rem;
    font-weight: 800;
}

.studio-progress {
    margin-top: 30px;
}

.studio-progress-header {
    margin-bottom: 9px;

    display: flex;
    justify-content: space-between;
    gap: 20px;

    color: var(--color-text-soft);

    font-size: 0.9rem;
}

.studio-progress-header strong {
    color: var(--color-primary);
}

.studio-progress-track {
    height: 12px;

    overflow: hidden;

    background: #dce8f6;

    border-radius: 999px;
}

.studio-progress-value {
    height: 100%;

    background:
        linear-gradient(
            90deg,
            var(--color-primary),
            #4da3ff
        );

    border-radius: inherit;
}

.studio-membership-preview {
    min-height: 220px;
    padding: 28px;

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

    background:
        rgba(255, 255, 255, 0.78);

    border: 1px solid rgba(21, 101, 192, 0.14);
    border-radius: var(--radius-medium);

    text-align: center;
}

.studio-preview-avatar {
    width: 86px;
    height: 86px;
    margin-bottom: 18px;

    display: flex;
    align-items: center;
    justify-content: center;

    background:
        linear-gradient(
            135deg,
            var(--color-primary),
            var(--color-primary-dark)
        );

    color: #ffffff;

    border: 7px solid #ffffff;
    border-radius: 50%;

    box-shadow:
        0 15px 35px rgba(21, 101, 192, 0.25);

    font-size: 2rem;
    font-weight: 900;
}

.studio-membership-preview strong {
    font-size: 1.05rem;
}

.studio-membership-preview span {
    margin-top: 3px;

    color: var(--color-text-soft);

    font-size: 0.85rem;
}


/* =========================================================
   HERRAMIENTAS
   ========================================================= */

.studio-tools {
    margin-top: 25px;
}

.studio-section-heading {
    margin-bottom: 24px;

    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 30px;
}

.studio-section-heading h2 {
    margin-top: 4px;

    font-size: clamp(1.8rem, 4vw, 2.7rem);
    letter-spacing: -1px;
}

.studio-section-heading > p {
    max-width: 400px;

    color: var(--color-text-soft);

    text-align: right;
}

.studio-grid {
    display: grid;
    grid-template-columns:
        repeat(3, minmax(0, 1fr));
    gap: 20px;
}

.studio-card {
    min-height: 300px;
    padding: 26px;

    display: flex;
    flex-direction: column;

    background: var(--color-surface);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-medium);

    box-shadow:
        0 10px 30px rgba(30, 60, 100, 0.06);

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease,
        border-color 0.2s ease;
}

.studio-card-active:hover {
    transform: translateY(-5px);

    border-color: #b5d3f6;

    box-shadow:
        0 20px 45px rgba(30, 60, 100, 0.12);
}

.studio-card-locked {
    background:
        linear-gradient(
            180deg,
            #ffffff 0%,
            #f8fafc 100%
        );
}

.studio-card-icon {
    width: 54px;
    height: 54px;
    margin-bottom: 22px;

    display: flex;
    align-items: center;
    justify-content: center;

    background: var(--color-primary-light);
    color: var(--color-primary);

    border-radius: 15px;

    font-size: 1rem;
    font-weight: 900;
}

.studio-card-content {
    flex-grow: 1;
}

.studio-card-status {
    display: inline-block;
    margin-bottom: 9px;

    color: var(--color-success);

    font-size: 0.73rem;
    font-weight: 800;
    letter-spacing: 0.4px;
    text-transform: uppercase;
}

.studio-status-locked {
    color: #9a6700;
}

.studio-card h3 {
    font-size: 1.35rem;
}

.studio-card p {
    margin-top: 9px;

    color: var(--color-text-soft);

    font-size: 0.92rem;
}

.studio-card-link {
    margin-top: 22px;

    color: var(--color-primary);

    font-size: 0.9rem;
    font-weight: 800;
}

.studio-card-link:hover {
    color: var(--color-primary-dark);
}

.studio-card-link-muted {
    color: #94a3b8;
}

.studio-card-link-muted:hover {
    color: #94a3b8;
}


/* =========================================================
   ACTUALIZACIÓN DE MEMBRESÍA
   ========================================================= */

.studio-upgrade {
    margin-top: 55px;
    padding: 32px;

    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 35px;

    background:
        linear-gradient(
            135deg,
            #0d47a1,
            #1976d2
        );

    color: #ffffff;

    border-radius: var(--radius-large);

    box-shadow:
        0 20px 50px rgba(13, 71, 161, 0.2);
}

.studio-upgrade .studio-label {
    color: #b9d8ff;
}

.studio-upgrade h2 {
    margin-top: 5px;

    font-size: 1.8rem;
}

.studio-upgrade p {
    max-width: 680px;
    margin-top: 8px;

    color: rgba(255, 255, 255, 0.82);
}

.studio-upgrade .button {
    flex-shrink: 0;

    background: #ffffff;
    color: var(--color-primary-dark);

    border-color: #ffffff;
}

.studio-upgrade .button:disabled {
    cursor: not-allowed;
    opacity: 0.88;
}


/* =========================================================
   MIA STUDIO RESPONSIVE
   ========================================================= */

@media (max-width: 950px) {

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

    .studio-membership {
        grid-template-columns: 1fr;
    }

    .studio-membership-preview {
        min-height: 190px;
    }
}

@media (max-width: 700px) {

    .studio-section {
        padding: 45px 0 70px;
    }

    .studio-heading,
    .studio-section-heading,
    .studio-upgrade {
        align-items: stretch;
        flex-direction: column;
    }

    .studio-heading .button {
        width: 100%;
    }

    .studio-section-heading > p {
        text-align: left;
    }

    .studio-plan-row {
        flex-direction: column;
    }

    .studio-grid {
        grid-template-columns: 1fr;
    }

    .studio-upgrade .button {
        width: 100%;
    }
}

@media (max-width: 480px) {

    .studio-membership,
    .studio-card,
    .studio-upgrade {
        padding: 22px;
    }

    .studio-heading h1 {
        font-size: 2.7rem;
    }
}