/* ============================================================
   layout.css - APPLICATION LAYOUT
   ============================================================ */

/* ============================================================
   APP SHELL
   ============================================================ */
.app-shell {
    padding-top: var(--header-height);
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
}

/* ============================================================
   HEADER - Fixed at top
   ============================================================ */
.app-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    height: var(--header-height);
    padding: 0 var(--space-4);
    background: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: 0 4px 24px rgba(58, 107, 140, 0.25);
    border-bottom: 2px solid var(--color-accent);
    transition: background var(--transition);
}

.app-header__left {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
}

.app-header__brand {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--color-text-inverse);
    min-width: 0;
}

.app-header__logo {
    height: 34px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
    flex-shrink: 0;
}

.app-header__brand-text {
    display: flex;
    flex-direction: column;
    line-height: var(--line-height-tight);
    min-width: 0;
}

.app-header__brand-name {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-inverse);
    letter-spacing: var(--letter-spacing-tight);
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    white-space: nowrap;
}

.app-header__brand-sub {
    font-size: 0.6rem;
    font-weight: var(--font-weight-medium);
    color: var(--color-accent-light);
    letter-spacing: var(--letter-spacing-wider);
    text-transform: uppercase;
    white-space: nowrap;
}

.app-header__right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.app-header__user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3) var(--space-1) var(--space-2);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--color-text-inverse);
    cursor: pointer;
    transition: var(--transition-fast);
    text-decoration: none;
    min-height: var(--touch-target-min);
}

    .app-header__user:hover {
        background: rgba(255, 255, 255, 0.18);
        border-color: rgba(255, 255, 255, 0.2);
    }

.app-header__avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-dark));
    color: var(--color-primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(232, 131, 42, 0.3);
}

/* ============================================================
   HEADER - User Info (always visible)
   ============================================================ */
.app-header__user-info {
    display: flex;
    flex-direction: column;
    line-height: var(--line-height-tight);
    min-width: 0;
}

.app-header__user-name {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-inverse);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 120px;
}

.app-header__user-role {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.7);
    white-space: nowrap;
}

.app-header__user-chevron {
    font-size: 0.65rem;
    color: rgba(255, 255, 255, 0.5);
    transition: transform var(--transition);
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.app-main {
    min-width: 0;
}

/* ============================================================
   PAGE CONTAINER
   ============================================================ */
.app-page {
    padding: var(--page-padding-y) var(--page-padding-x);
    max-width: var(--content-max-width);
    margin: 0 auto;
    width: 100%;
}

/* ============================================================
   PAGE BODY
   ============================================================ */
.app-page__body {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    padding: var(--card-padding-y) var(--card-padding-x);
    min-height: 300px;
    transition: background var(--transition), border-color var(--transition), box-shadow var(--transition);
}

/* ============================================================
   RESPONSIVE HEADER
   ============================================================ */
@media (min-width: 576px) {
    .app-header {
        padding: 0 var(--space-5);
    }

    .app-header__logo {
        height: 38px;
    }

    .app-header__brand-name {
        font-size: var(--font-size-sm);
    }

    .app-header__brand-sub {
        font-size: 0.65rem;
    }

    .app-header__avatar {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-sm);
    }
}

@media (min-width: 768px) {
    .app-header {
        padding: 0 var(--space-5);
    }

    .app-header__logo {
        height: 46px;
    }

    .app-header__brand-name {
        font-size: var(--font-size-md);
    }

    .app-header__brand-sub {
        font-size: var(--font-size-xs);
    }

    .app-header__user {
        padding: var(--space-1) var(--space-3) var(--space-1) var(--space-2);
        gap: var(--space-2);
    }

    .app-header__avatar {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-sm);
    }

    .app-header__user-name {
        font-size: var(--font-size-sm);
        max-width: 180px;
    }

    .app-header__user-role {
        font-size: var(--font-size-xs);
    }

    .app-page {
        padding: var(--space-5) var(--space-5);
    }

    .app-page__body {
        padding: var(--space-5);
        border-radius: var(--radius-lg);
        min-height: 400px;
    }
}

@media (min-width: 992px) {
    .app-page {
        padding: var(--space-5) var(--space-6);
    }
}

@media (min-width: 1200px) {
    .app-page {
        padding: var(--space-6) var(--space-8);
    }

    .app-page__body {
        padding: var(--space-6);
    }
}

/* ============================================================
   SCHOOL LOGO
   ============================================================ */
.school-logo {
    max-height: 60px;
    width: auto;
    object-fit: contain;
    margin-inline: auto;
}

@media (min-width: 768px) {
    .school-logo {
        max-height: 80px;
    }
}