/* ================================================================
   GUARDINIA SYSTEM - PROFESSIONAL DESIGN
   Cores: Azul Escuro (#1e3a8a) e Azul Claro (#3b82f6)
   ================================================================ */

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

:root {
    --azul-escuro: #1e3a8a;
    --azul-claro: #3b82f6;
    --azul-muito-escuro: #1e40af;
    --azul-light: #60a5fa;
    --branco: #ffffff;
    --cinza-claro: #f8fafc;
    --cinza-medio: #e2e8f0;
    --cinza: #64748b;
    --cinza-escuro: #334155;
    --verde: #10b981;
    --verde-claro: #d1fae5;
    --vermelho: #ef4444;
    --vermelho-claro: #fee2e2;
    --laranja: #f59e0b;
    --laranja-claro: #fef3c7;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.6;
    color: var(--cinza-escuro);
    background: var(--cinza-claro);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ========= HEADER ========= */
.header {
    background: var(--branco);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(30, 58, 138, 0.08);
    border-bottom: 1px solid var(--cinza-medio);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.8;
}

.logo-image {
    height: 100px;
    width: auto;
    object-fit: contain;
}

.logo-text {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--azul-escuro);
    letter-spacing: -0.5px;
}

.btn-back {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: var(--cinza-claro);
    color: var(--azul-escuro);
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s;
}

.btn-back:hover {
    background: var(--azul-claro);
    color: var(--branco);
    transform: translateX(-3px);
}

/* ========= MAIN CONTENT ========= */
.main-content {
    flex: 1;
    padding: 3rem 0;
}

/* ========= HERO SECTION ========= */
.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    background: linear-gradient(135deg, var(--azul-claro), var(--azul-escuro));
    color: var(--branco);
    border-radius: 30px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--azul-escuro);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: linear-gradient(135deg, var(--azul-claro), var(--azul-escuro));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--cinza);
    max-width: 650px;
    margin: 0 auto;
    line-height: 1.7;
}

.hero-description strong {
    color: var(--azul-claro);
    font-weight: 700;
}

/* ========= ANALYSIS CARD ========= */
.analysis-card {
    background: var(--branco);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(30, 58, 138, 0.08);
    margin-bottom: 3rem;
    border: 1px solid var(--cinza-medio);
}

/* ========= TABS ========= */
.analysis-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 0.5rem;
    background: var(--cinza-claro);
    border-radius: 12px;
}

.tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.7rem;
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--cinza);
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: rgba(59, 130, 246, 0.1);
    color: var(--azul-claro);
}

.tab-btn.active {
    background: var(--azul-claro);
    color: var(--branco);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.tab-btn i {
    font-size: 1.2rem;
}

/* ========= TAB CONTENT ========= */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.4s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========= INPUT SECTION ========= */
.input-section {
    margin-bottom: 2rem;
}

.input-label {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--azul-escuro);
    margin-bottom: 1rem;
}

.input-label i {
    font-size: 1.2rem;
    color: var(--azul-claro);
}

/* ========= TEXTAREA ========= */
.input-textarea {
    width: 100%;
    min-height: 180px;
    padding: 1.2rem;
    border: 2px solid var(--cinza-medio);
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--cinza-escuro);
    resize: vertical;
    transition: all 0.3s;
}

.input-textarea:focus {
    outline: none;
    border-color: var(--azul-claro);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.1);
}

.input-textarea::placeholder {
    color: var(--cinza);
}

.char-counter {
    text-align: right;
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: var(--cinza);
    font-weight: 600;
}

/* ========= UPLOAD ZONE ========= */
.upload-zone {
    border: 2px dashed var(--cinza-medio);
    border-radius: 16px;
    background: var(--cinza-claro);
    transition: all 0.3s;
}

.upload-zone.dragover {
    border-color: var(--azul-claro);
    background: rgba(59, 130, 246, 0.05);
}

/* ========= UPLOAD PLACEHOLDER ========= */
.upload-placeholder {
    padding: 3rem 2rem;
    text-align: center;
}

.upload-icon {
    font-size: 4rem;
    color: var(--azul-claro);
    margin-bottom: 1.5rem;
    opacity: 0.8;
}

.upload-placeholder h3 {
    font-size: 1.3rem;
    color: var(--azul-escuro);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.upload-or {
    color: var(--cinza);
    margin: 1rem 0;
    font-size: 0.95rem;
}

.btn-select-file {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 1rem 2rem;
    background: var(--azul-claro);
    color: var(--branco);
    border: none;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-select-file:hover {
    background: var(--azul-escuro);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

.upload-hint {
    margin-top: 1rem;
    color: var(--cinza);
    font-size: 0.9rem;
}

/* ========= IMAGE PREVIEW ========= */
.image-preview {
    padding: 1.5rem;
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--cinza-medio);
}

.preview-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.preview-info i {
    font-size: 1.5rem;
    color: var(--verde);
}

.preview-text {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
}

.file-name {
    font-weight: 700;
    color: var(--azul-escuro);
    font-size: 1rem;
}

.file-size {
    font-size: 0.85rem;
    color: var(--cinza);
}

.btn-remove {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--vermelho-claro);
    color: var(--vermelho);
    border: none;
    border-radius: 10px;
    font-size: 1.2rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-remove:hover {
    background: var(--vermelho);
    color: var(--branco);
    transform: scale(1.1);
}

.preview-image-container {
    margin: 1.5rem 0;
    border-radius: 12px;
    overflow: hidden;
    background: var(--cinza-claro);
}

.preview-image-container img {
    width: 100%;
    height: auto;
    display: block;
    max-height: 400px;
    object-fit: contain;
}

.preview-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    padding: 1rem;
    background: var(--verde-claro);
    border-radius: 10px;
    color: var(--verde);
    font-weight: 600;
}

.preview-status i {
    font-size: 1.2rem;
}

/* ========= ANALYZE BUTTON ========= */
.btn-analyze {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.3rem 2rem;
    background: linear-gradient(135deg, var(--azul-claro), var(--azul-escuro));
    color: var(--branco);
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.3);
}

.btn-analyze:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.4);
}

.btn-analyze:active {
    transform: translateY(0);
}

.btn-analyze:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* ========= LOADING STATE ========= */
.loading-state {
    text-align: center;
    padding: 3rem 2rem;
    margin-top: 2rem;
    background: var(--cinza-claro);
    border-radius: 16px;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--cinza-medio);
    border-top: 4px solid var(--azul-claro);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-state p {
    color: var(--azul-claro);
    font-weight: 600;
    font-size: 1.05rem;
}

/* ========= RESULTS ========= */
.resultado {
    margin-top: 2rem;
    animation: fadeIn 0.5s ease;
}

.result-card {
    padding: 2rem;
    border-radius: 16px;
    border: 2px solid;
    margin-bottom: 1.5rem;
}

.result-card.danger {
    background: var(--vermelho-claro);
    border-color: var(--vermelho);
}

.result-card.warning {
    background: var(--laranja-claro);
    border-color: var(--laranja);
}

.result-card.success {
    background: var(--verde-claro);
    border-color: var(--verde);
}

.result-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.result-icon {
    font-size: 2.5rem;
}

.result-card.danger .result-icon {
    color: var(--vermelho);
}

.result-card.warning .result-icon {
    color: var(--laranja);
}

.result-card.success .result-icon {
    color: var(--verde);
}

.result-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--azul-escuro);
}

.result-content {
    line-height: 1.8;
    color: var(--cinza-escuro);
}

.result-content h3 {
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    color: var(--azul-escuro);
    font-weight: 700;
}

.result-content ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.result-content li {
    margin-bottom: 0.5rem;
}

.result-content strong {
    color: var(--azul-escuro);
    font-weight: 700;
}

/* ========= SECURITY TIPS ========= */
.security-tips {
    margin-bottom: 3rem;
}

.tips-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    justify-content: center;
}

.tips-header i {
    font-size: 2rem;
    color: var(--laranja);
}

.tips-header h2 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--azul-escuro);
}

.tips-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.tip-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--branco);
    border-radius: 12px;
    border: 2px solid var(--cinza-medio);
    transition: all 0.3s;
}

.tip-card:hover {
    border-color: var(--azul-claro);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

.tip-card i {
    font-size: 1.5rem;
    color: var(--azul-claro);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.tip-card p {
    color: var(--cinza-escuro);
    line-height: 1.6;
    font-weight: 500;
}

/* ========= QUICK LINKS ========= */
.quick-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.quick-link {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--branco);
    border-radius: 16px;
    text-decoration: none;
    border: 2px solid var(--cinza-medio);
    transition: all 0.3s;
}

.quick-link:hover {
    border-color: var(--azul-claro);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.15);
}

.quick-link i {
    font-size: 2.5rem;
    color: var(--azul-claro);
}

.quick-link-text {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.quick-link-text strong {
    font-size: 1.1rem;
    color: var(--azul-escuro);
}

.quick-link-text span {
    font-size: 0.9rem;
    color: var(--cinza);
}

/* ========= FOOTER ========= */
.footer {
    background: var(--azul-escuro);
    color: rgba(255, 255, 255, 0.9);
    padding: 2.5rem 0 1.5rem;
    margin-top: auto;
}

.footer-disclaimer {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
}

.footer-disclaimer i {
    font-size: 1.5rem;
    color: var(--azul-light);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.footer-disclaimer p {
    line-height: 1.7;
}

.footer-disclaimer strong {
    color: var(--branco);
}

.footer-bottom {
    text-align: center;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.8);
}

.footer-bottom a {
    color: var(--azul-light);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.footer-bottom a:hover {
    color: var(--branco);
}

/* ========= RESPONSIVE ========= */
@media (max-width: 768px) {
    .container {
        padding: 0 1.5rem;
    }

    .logo-image {
        height: 40px;
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .btn-back span {
        display: none;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1rem;
    }

    .analysis-card {
        padding: 1.5rem;
    }

    .analysis-tabs {
        flex-direction: column;
        gap: 0.5rem;
    }

    .tab-btn {
        justify-content: flex-start;
    }

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

    .quick-links {
        grid-template-columns: 1fr;
    }

    .preview-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .btn-remove {
        align-self: flex-end;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 2rem 0;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .analysis-card {
        padding: 1.2rem;
    }

    .upload-placeholder {
        padding: 2rem 1rem;
    }

    .upload-icon {
        font-size: 3rem;
    }
}