/* ==================== NAVIGATION ==================== */
.navbar {
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-medium) 100%);
    color: var(--color-white);
    padding: var(--space-lg) var(--space-2xl);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    position: relative;
    overflow: hidden;
}

.navbar::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(220, 0, 50, 0.15) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.navbar-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-lg);
    position: relative;
    z-index: 1;
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.navbar-brand:hover {
    opacity: 0.8;
}

.navbar-brand-logo {
    height: 45px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.navbar-brand-logo img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-base);
    font-size: var(--font-size-sm);
    font-weight: 500;
    white-space: nowrap;
}

.nav-link:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-link.btn-logout {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.nav-link.btn-logout:hover {
    background-color: var(--color-primary-dark);
}

/* ==================== FLASH MESSAGES ==================== */
.flash-messages {
    margin-bottom: var(--space-lg);
}

.flash {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: slideIn 0.3s ease;
    font-size: var(--font-size-sm);
    box-shadow: var(--shadow-sm);
}

.flash.error {
    background-color: var(--color-error);
    color: var(--color-white);
}

.flash.warning {
    background-color: var(--color-warning);
    color: var(--color-white);
}

.flash.info {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.flash.success {
    background-color: var(--color-success);
    color: var(--color-white);
}

/* ==================== BUTTONS ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-dark);
    color: var(--color-white);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-dark-medium);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-dark);
    border: 2px solid var(--color-dark);
}

.btn-outline:hover:not(:disabled) {
    background-color: var(--color-dark);
    color: var(--color-white);
}

/* ==================== CARDS ==================== */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    box-shadow: var(--shadow-md);
    transition: box-shadow var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

/* ==================== FORMS ==================== */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.form-label.required::after {
    content: '*';
    color: var(--color-primary);
    margin-left: var(--space-xs);
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--color-gray-lighter);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background-color: var(--color-white);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(220, 0, 50, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

/* ==================== MODALS ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.modal-content {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

.modal-header {
    padding: var(--space-xl);
    border-bottom: 2px solid var(--color-gray-lightest);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-dark);
}

.modal-close {
    width: 40px;
    height: 40px;
    border: none;
    background: var(--color-gray-lightest);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-xl);
    color: var(--color-gray);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.modal-body {
    padding: var(--space-xl);
    overflow-y: auto;
}

/* ==================== LOADING ==================== */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--color-white);
    animation: spin 0.8s linear infinite;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    /* Navbar ultra compact sur mobile */
    .navbar {
        padding: var(--space-sm) var(--space-lg);
    }

    .navbar-content {
        gap: var(--space-sm);
    }

    .navbar-brand {
        gap: var(--space-xs);
    }

    .navbar-brand-logo {
        height: 32px;
    }

    .navbar-nav {
        gap: 6px;
        flex-shrink: 0;
        flex-wrap: nowrap;
    }

    .nav-link {
        padding: 6px 8px;
        font-size: 10px;
        white-space: nowrap;
        line-height: 1.2;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .container {
        padding: var(--space-sm);
    }

    .btn {
        width: 100%;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: var(--space-sm) var(--space-md);
    }

    .navbar-brand-logo {
        height: 26px;
    }

    .navbar-nav {
        gap: 4px;
    }

    .nav-link {
        padding: 5px 7px;
        font-size: 9px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .container {
        padding: var(--space-xs);
    }
}

/* Touch device optimizations */
@media (hover: none) and (pointer: coarse) {
    .btn, .nav-link, .form-control {
        min-height: 44px; /* iOS recommended touch target */
    }
}

/* ==================== PDF PREVIEW MODAL ==================== */
.pdf-preview-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(6px);
    z-index: 3000;
    animation: fadeIn 0.3s ease;
}

.pdf-preview-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.pdf-modal-content {
    background: var(--color-white);
    border-radius: var(--radius-xl);
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease;
}

.pdf-modal-header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 2px solid var(--color-gray-lightest);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, var(--color-dark) 0%, var(--color-dark-medium) 100%);
    color: var(--color-white);
}

.pdf-modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.pdf-modal-close {
    width: 36px;
    height: 36px;
    border: none;
    background: rgba(255, 255, 255, 0.15);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-xl);
    color: var(--color-white);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
}

.pdf-modal-close:hover {
    background: var(--color-primary);
    transform: rotate(90deg);
}

.pdf-preview-container {
    flex: 1;
    overflow: auto;
    background: var(--color-gray-lightest);
    padding: var(--space-md);
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.pdf-preview-iframe {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: var(--radius-md);
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
}

.pdf-preview-iframe:not([src]) {
    background: var(--color-gray-lightest);
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-preview-iframe:not([src])::before {
    content: 'Chargement du PDF...';
    color: var(--color-gray);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.pdf-preview-object {
    width: 100%;
    height: 100%;
    min-height: 600px;
    border: none;
    background: var(--color-white);
}

.pdf-preview-embed {
    width: 100%;
    height: 100%;
    min-height: 300vh;
    border: none;
    background: var(--color-white);
}

.pdf-scroll-wrapper {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.pdf-fallback {
    padding: var(--space-2xl);
    text-align: center;
    background: var(--color-gray-lightest);
}

.pdf-fallback p {
    margin-bottom: var(--space-lg);
    color: var(--color-gray);
    font-size: var(--font-size-base);
}

.pdf-canvas-container {
    width: 100%;
    height: 100%;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    background: var(--color-gray-lightest);
    padding: var(--space-md);
}

.pdf-page-wrapper {
    margin-bottom: var(--space-lg);
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.pdf-page-canvas {
    display: block;
    width: 100%;
    height: auto;
}

.pdf-page-label {
    padding: var(--space-sm) var(--space-md);
    background: var(--color-dark);
    color: var(--color-white);
    text-align: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.pdf-loading {
    padding: var(--space-2xl);
    text-align: center;
    color: var(--color-gray);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.pdf-error {
    padding: var(--space-2xl);
    text-align: center;
    background: var(--color-gray-lightest);
}

.pdf-error p {
    margin-bottom: var(--space-lg);
    color: var(--color-error);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.pdf-modal-actions {
    padding: var(--space-lg) var(--space-xl);
    border-top: 2px solid var(--color-gray-lightest);
    background: var(--color-white);
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.pdf-action-group {
    display: flex;
    gap: var(--space-sm);
    flex: 1;
    min-width: 200px;
}

.pdf-action-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    border: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    white-space: nowrap;
    box-shadow: var(--shadow-sm);
}

.pdf-action-btn:active {
    transform: translateY(1px);
}

.pdf-action-btn-primary {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.pdf-action-btn-primary:hover {
    background-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.pdf-action-btn-secondary {
    background-color: var(--color-dark);
    color: var(--color-white);
}

.pdf-action-btn-secondary:hover {
    background-color: var(--color-dark-medium);
    box-shadow: var(--shadow-md);
}

.pdf-action-btn-outline {
    background-color: var(--color-dark);
    color: var(--color-white);
    border: 2px solid var(--color-dark);
}

.pdf-action-btn-outline:hover {
    background-color: var(--color-dark-medium);
    color: var(--color-white);
    border-color: var(--color-dark-medium);
}

/* ==================== EMAIL MODAL ==================== */
.email-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(6px);
    z-index: 5000;
    animation: fadeIn 0.2s ease;
}

.email-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
}

.email-modal-content {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.2s ease;
}

.email-modal-header {
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 2px solid var(--color-gray-lightest);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.email-modal-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-dark);
}

.email-modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--color-gray-lightest);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-lg);
    color: var(--color-gray);
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.email-modal-close:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.email-modal-body {
    padding: var(--space-xl);
}

.email-form-group {
    margin-bottom: var(--space-md);
}

.email-form-group:last-of-type {
    margin-bottom: var(--space-lg);
}

.email-form-label {
    display: block;
    margin-bottom: var(--space-sm);
    color: var(--color-dark);
    font-weight: 600;
    font-size: var(--font-size-sm);
}

.email-form-input {
    width: 100%;
    padding: var(--space-md);
    border: 2px solid var(--color-gray-lighter);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all var(--transition-base);
    background-color: var(--color-white);
    font-family: inherit;
}

.email-form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(220, 0, 50, 0.1);
}

.email-modal-actions {
    padding: var(--space-lg) var(--space-xl);
    border-top: 2px solid var(--color-gray-lightest);
    background: var(--color-gray-lightest);
    display: flex;
    gap: var(--space-sm);
    justify-content: flex-end;
}

/* ==================== RESPONSIVE PDF MODAL ==================== */
@media (max-width: 768px) {
    .pdf-preview-modal.active {
        padding: 0;
    }

    .pdf-modal-content {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
        height: 100%;
    }

    .pdf-modal-header {
        padding: var(--space-md) var(--space-lg);
        flex-shrink: 0;
    }

    .pdf-modal-title {
        font-size: var(--font-size-base);
    }

    .pdf-preview-container {
        flex: 1;
        overflow-y: auto;
        overflow-x: hidden;
        -webkit-overflow-scrolling: touch;
        padding: 0;
        background: var(--color-gray-lightest);
        position: relative;
        display: flex;
        flex-direction: column;
    }

    .pdf-preview-iframe,
    .pdf-preview-object,
    .pdf-scroll-wrapper {
        width: 100%;
        flex: 1;
        min-height: calc(100vh - 120px);
        height: auto;
        border-radius: 0;
        box-shadow: none;
    }

    .pdf-preview-iframe-mobile {
        width: 100%;
        height: calc(100vh - 120px);
        border: none;
        border-radius: 0;
        box-shadow: none;
        background: var(--color-white);
        display: block;
    }

    .pdf-preview-embed {
        width: 100%;
        min-height: 400vh;
        height: auto;
        border: none;
    }

    .pdf-modal-actions {
        padding: var(--space-md);
        flex-direction: column;
        flex-shrink: 0;
    }

    .pdf-action-group {
        flex-direction: column;
        width: 100%;
        min-width: auto;
    }

    .pdf-action-btn {
        width: 100%;
        justify-content: center;
        padding: var(--space-md);
    }

    .email-modal.active {
        padding: var(--space-md);
    }

    .email-modal-header,
    .email-modal-body,
    .email-modal-actions {
        padding: var(--space-md);
    }
}

@media (max-width: 480px) {
    .pdf-modal-title {
        font-size: var(--font-size-sm);
    }

    .pdf-modal-close {
        width: 32px;
        height: 32px;
        font-size: var(--font-size-base);
    }
}