/* ============================================================
   BASE — Reset, Variáveis, Tipografia, Botões
   ============================================================ */

:root {
    /* === Cores === */
    --color-black: #0B0B0B;
    --color-dark: #161616;
    --color-white: #FFFFFF;
    --color-teal: #203e43;
    --color-turquoise: #203e43;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e0e0e0;
    --color-gray-300: #b0b0b0;
    --color-gray-400: #808080;
    --color-gray-500: #505050;
    --color-gray-600: #333333;
    --color-gray-700: #1E1E1E;

    /* === Gradientes === */
    --gradient-hero: linear-gradient(135deg, var(--color-black) 0%, #0A1F24 40%, #0D2A30 70%, var(--color-black) 100%);
    --gradient-treatments: linear-gradient(180deg, var(--color-dark) 0%, #0A1F24 50%, var(--color-dark) 100%);
    --gradient-btn: linear-gradient(135deg, #1da84d 0%, #25D366 100%);
    --gradient-btn-hover: linear-gradient(135deg, #1a9c47 0%, #3dde7a 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(32, 62, 67, 0.15) 0%, transparent 70%);

    /* === Tipografia === */
    --font-primary: 'Montserrat', sans-serif;
    --font-secondary: 'Inter', sans-serif;
    --font-tertiary: 'Poppins', sans-serif;

    /* === Layout === */
    --section-padding: 100px 0;
    --container-width: 1200px;
    --container-padding: 0 24px;

    /* === Transições === */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* === Reset === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 20px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-secondary);
    color: var(--color-white);
    background: var(--color-black);
    overflow-x: hidden;
    line-height: 1.6;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--container-padding);
    position: relative;
    z-index: 2;
}

/* === Tipografia reutilizável === */
.section-tag {
    display: inline-block;
    font-family: var(--font-tertiary);
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-teal);
    margin-bottom: 12px;
}
.section-tag--light { color: var(--color-turquoise); }

.section-title {
    font-family: var(--font-primary);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 20px;
    line-height: 1.2;
}
.section-title--light { color: var(--color-white); }
.section-title--gold {
    color: #f2bf52;
    font-size: clamp(2.2rem, 4.5vw, 3.2rem);
}
.section-title--has-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}
.section-title-icon {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.section-description {
    font-family: var(--font-secondary);
    font-size: 1.05rem;
    color: var(--color-gray-500);
    max-width: 600px;
    line-height: 1.7;
}
.section-description--light { color: var(--color-gray-300); }

.section-header {
    text-align: center;
    margin-bottom: 60px;
}
.section-header .section-description { margin: 0 auto; }

/* === Botões === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-family: var(--font-tertiary);
    font-size: 0.95rem;
    font-weight: 600;
    padding: 16px 36px;
    border-radius: 8px;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-btn);
    color: var(--color-white);
    box-shadow: 0 4px 25px rgba(37, 211, 102, 0.3);
    animation: btnPulse 2s ease-in-out infinite;
}
.btn-primary:hover {
    background: var(--gradient-btn-hover);
    box-shadow: 0 6px 35px rgba(37, 211, 102, 0.45);
    transform: translateY(-2px);
    animation: none;
}
.btn-primary:active { transform: translateY(0); }
.btn-primary:hover .btn-icon { transform: translateX(4px); }
.btn-icon { transition: transform var(--transition-base); }
.btn-large { padding: 20px 48px; font-size: 1.05rem; border-radius: 10px; }

.btn-whatsapp {
    background: #25D366;
    color: var(--color-white);
    font-size: 1rem;
    padding: 18px 42px;
    border-radius: 10px;
    box-shadow: 0 4px 25px rgba(37, 211, 102, 0.35);
    gap: 12px;
}
.btn-whatsapp:hover {
    background: #20BD5A;
    transform: translateY(-2px);
    box-shadow: 0 6px 35px rgba(37, 211, 102, 0.5);
}