/* Variáveis para consistência de cores e design */
:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --success: #16a34a;
    --bg-global: #f8fafc;
    --bg-card: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--bg-global);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.container {
    background-color: var(--bg-card);
    padding: 40px;
    border-radius: 16px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    width: 100%;
    max-width: 540px;
}

h1 {
    font-size: 1.8rem;
    margin-bottom: 8px;
    text-align: center;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
    text-align: center;
    margin-bottom: 24px;
}

/* Layout do Formulário */
.form-group {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

input[type="url"] {
    flex: 1;
    padding: 14px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}

input[type="url"]:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

button {
    padding: 14px 24px;
    background-color: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

button:hover {
    background-color: var(--primary-hover);
}

/* Caixa de Resultado */
.result-box {
    position: relative;
    background-color: #f1f5f9;
    border: 1px dashed var(--primary);
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 24px;
}

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

#shortUrlText {
    font-weight: 600;
    color: var(--primary);
    word-break: break-all;
}

.btn-copy {
    background-color: var(--success);
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn-copy:hover {
    background-color: #15803d;
}

/* Toast de feedback */
.toast {
    position: absolute;
    top: -35px;
    right: 16px;
    background: #334155;
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.75rem;
}

/* Histórico */
.history-section {
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.history-section h3 {
    font-size: 1rem;
    margin-bottom: 12px;
    color: var(--text-main);
}

.history-list {
    list-style: none;
    max-height: 150px;
    overflow-y: auto;
}

.history-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    padding: 8px 0;
    border-bottom: 1px solid #f1f5f9;
}

.history-item a {
    color: var(--text-muted);
    text-decoration: none;
    max-width: 70%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.history-item span {
    font-weight: 600;
}

/* Classes utilitárias */
.hidden {
    display: none !important;
}