/* ========================================
   GLOBAL STYLES & RESETS
   ======================================== */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 100%);
    overflow-x: hidden;
    color: #2c3e50;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 640px) {
    .container {
        padding: 0 15px;
    }
}

/* ========================================
   ANIMATIONS
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% { 
        transform: translateY(0px); 
    }
    50% { 
        transform: translateY(-20px); 
    }
}

@keyframes glow {
    0%, 100% { 
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.4); 
    }
    50% { 
        box-shadow: 0 0 40px rgba(102, 126, 234, 0.6); 
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   BUTTONS
   ======================================== */

.cta-button {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 16px 35px;
    font-size: clamp(1rem, 2.2vw, 1.1rem);
    font-weight: 600;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    display: inline-block;
    text-align: center;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.cta-button:active {
    transform: translateY(0);
}

@media (max-width: 640px) {
    .cta-button {
        padding: 14px 30px;
        width: auto;
        max-width: 100%;
    }
}

/* ========================================
   SECTIONS
   ======================================== */

.section {
    padding: 80px 0;
}

@media (max-width: 768px) {
    .section {
        padding: 50px 0;
    }
}

@media (max-width: 640px) {
    .section {
        padding: 40px 0;
    }
}

.section-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    text-align: center;
    margin-bottom: 50px;
    color: #2c3e50;
    font-weight: 700;
    padding: 0 20px;
}

@media (max-width: 640px) {
    .section-title {
        margin-bottom: 35px;
    }
}

.gradient-section {
    background: linear-gradient(135deg, #667eea10 0%, #764ba220 100%);
}

.light-section {
    background: #ffffff;
}

.white-section {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
}

/* ========================================
   CARDS
   ======================================== */

.card {
    background: white;
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

@media (max-width: 640px) {
    .card {
        padding: 20px;
        border-radius: 15px;
    }
}

/* ========================================
   LOGO STYLES
   ======================================== */

.logo {
    width: 100px;
    height: 100px;
    filter: drop-shadow(0 10px 30px rgba(102, 126, 234, 0.2));
}

@media (max-width: 640px) {
    .logo {
        width: 80px;
        height: 80px;
    }
}

/* ========================================
   PILAAN LOGO ANIMATION
   ======================================== */

.pilaan-logo {
    display: inline-flex;
    font-size: clamp(2.5rem, 10vw, 6rem);
    font-weight: 900;
    margin-bottom: 20px;
    position: relative;
    cursor: pointer;
}

.pilaan-logo span {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.letter {
    display: inline-block;
}

/* Initial state: 'i' and 'a1' occupy no space */
.letter-i, .letter-a1 {
    width: 0;
    opacity: 0;
    transform: scale(0) rotate(-180deg);
    white-space: nowrap;
}

@keyframes expandWidthSlow {
    from { 
        width: 0; 
        margin: 0; 
    }
    to { 
        width: 0.7em; 
        margin: 0 6px; 
    } 
}

@keyframes rotateInSlow {
    0% {
        transform: rotate(-180deg) scale(0);
        opacity: 0;
    }
    60% {
        transform: rotate(10deg) scale(1.1);
        opacity: 1;
    }
    100% {
        transform: rotate(0deg) scale(1);
        opacity: 1;
    }
}

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

/* Animation sequence for "PLAN" letters */
.pilaan-logo.animate .letter-p,
.pilaan-logo.animate .letter-l,
.pilaan-logo.animate .letter-a2,
.pilaan-logo.animate .letter-n {
    animation: fadeIn 0.4s ease-out forwards;
}

.letter-l { animation-delay: 0.1s; }
.letter-a2 { animation-delay: 0.2s; }
.letter-n { animation-delay: 0.3s; }

/* The "i" animation */
.pilaan-logo.animate .letter-i {
    animation: 
        expandWidthSlow 0.8s ease-in-out forwards 1.0s, 
        rotateInSlow 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards 1.2s;
}

/* The "a1" animation */
.pilaan-logo.animate .letter-a1 {
    animation: 
        expandWidthSlow 0.8s ease-in-out forwards 1.8s, 
        rotateInSlow 1.2s cubic-bezier(0.4, 0, 0.2, 1) forwards 2.0s;
}

@media (max-width: 640px) {
    .pilaan-logo {
        margin-bottom: 15px;
    }
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

/* Touch devices optimization */
@media (hover: none) and (pointer: coarse) {
    .cta-button:hover {
        transform: none;
    }
    
    .card:hover {
        transform: none;
    }
}

/* Tablet landscape and desktop */
@media (min-width: 1025px) {
    .container {
        padding: 0 40px;
    }
}

/* Extra small devices */
@media (max-width: 480px) {
    body {
        font-size: 14px;
    }
    
    .section {
        padding: 30px 0;
    }
}