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

/* ===== VARIÁVEIS ===== */
:root {
    --gulf-blue: #4BA6D6;
    --gulf-blue-dark: #2E7FA8;
    --gulf-orange: #FF6C00;
    --gulf-orange-light: #FF8533;
    --bg-dark: #0f1419;
    --text-light: #ffffff;
    --text-gray: #b0b0b0;
}

/* ===== BODY ===== */
body {
    font-family: 'Rajdhani', sans-serif;
    background: linear-gradient(135deg, #0a0e13 0%, #1a1f26 50%, #0f1419 100%);
    color: var(--text-light);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
}

/* ===== GULF STRIPES ===== */
.gulf-stripes {
    position: fixed;
    top: 0;
    right: 0;
    width: 500px;
    height: 250px;
    background-image: url('gulf-pattern.png');
    background-size: cover;
    background-position: top right;
    opacity: 0.8;
    z-index: 1;
    pointer-events: none;
    animation: slideInRight 1.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ===== PARTICLES CANVAS ===== */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== CONTAINER ===== */
.container {
    position: relative;
    z-index: 10;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 40px 20px;
}

/* ===== LOGO ===== */
.logo-wrapper {
    margin-bottom: 60px;
    animation: fadeInScale 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo {
    width: 100%;
    max-width: 450px;
    height: auto;
    filter: drop-shadow(0 10px 40px rgba(75, 166, 214, 0.3));
    transition: all 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.logo:hover {
    transform: scale(1.05) translateY(-10px);
    filter: drop-shadow(0 20px 60px rgba(75, 166, 214, 0.5));
}

/* ===== CONTENT ===== */
.content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1.8s cubic-bezier(0.16, 1, 0.3, 1) 0.3s backwards;
}

.tagline {
    font-family: 'Roboto', sans-serif;
    font-size: 2.2rem;
    font-weight: 400;
    letter-spacing: 10px;
    color: var(--text-gray);
    margin-bottom: 40px;
    text-transform: uppercase;
    position: relative;
    display: inline-block;
}

.tagline::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--gulf-blue), transparent);
    animation: expandLine 2s ease-out 1s forwards;
}

.description {
    font-size: 1.6rem;
    line-height: 1.8;
    color: var(--text-light);
    font-weight: 300;
    margin-bottom: 60px;
    opacity: 0;
    animation: fadeIn 1.5s ease-out 1.2s forwards;
}

/* ===== CTA ===== */
.cta {
    display: inline-block;
    padding: 20px 70px;
    background: linear-gradient(135deg, var(--gulf-blue) 0%, var(--gulf-blue-dark) 100%);
    border: 3px solid var(--gulf-orange);
    position: relative;
    overflow: hidden;
    cursor: pointer;
    animation: slideInUp 1.5s cubic-bezier(0.16, 1, 0.3, 1) 0.6s backwards;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.cta:hover::before {
    width: 400px;
    height: 400px;
}

.cta:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(75, 166, 214, 0.4), 0 0 60px rgba(255, 108, 0, 0.3);
    border-color: var(--gulf-orange-light);
}

.cta-text {
    font-family: 'Roboto', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 4px;
    color: #ffffff;
    text-transform: uppercase;
    position: relative;
    z-index: 1;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.cta-text em {
    font-style: italic;
    font-weight: 400;
    color: var(--gulf-orange-light);
}

/* ===== FOOTER ===== */
.footer {
    margin-top: auto;
    padding: 30px 20px;
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-gray);
    opacity: 0;
    animation: fadeIn 2s ease-out 1.8s forwards;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 0.8;
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes expandLine {
    from {
        width: 0;
    }
    to {
        width: 200px;
    }
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
    .gulf-stripes {
        width: 300px;
        height: 150px;
    }
    
    .logo {
        max-width: 320px;
    }
    
    .tagline {
        font-size: 1.5rem;
        letter-spacing: 6px;
    }
    
    .tagline::after {
        bottom: -10px;
    }
    
    .description {
        font-size: 1.3rem;
    }
    
    .cta {
        padding: 16px 50px;
    }
    
    .cta-text {
        font-size: 1.1rem;
        letter-spacing: 3px;
    }
}

@media (max-width: 480px) {
    .gulf-stripes {
        width: 200px;
        height: 100px;
    }
    
    .logo {
        max-width: 260px;
    }
    
    .logo-wrapper {
        margin-bottom: 40px;
    }
    
    .tagline {
        font-size: 1.2rem;
        letter-spacing: 4px;
    }
    
    .description {
        font-size: 1.1rem;
        margin-bottom: 40px;
    }
    
    .cta {
        padding: 14px 40px;
        border-width: 2px;
    }
    
    .cta-text {
        font-size: 0.95rem;
        letter-spacing: 2px;
    }
}